priv.at is a project to allow users to save bookmarks _anonymously_ on [[del.icio.us]] - the social bookmarking service. ("Generate Bookmarklet":http://sandbox.sourcelabs.com/priv.at/)

h2. Notice - If you have bookmarks saved with priv.at, please visit [[Boz]] - this is the successor to this project and your missing bookmarks can be imported here.

priv.at is now deprecated, although the code should still work if you wish to use your own private.bookmarks account.

Users can create a unique [[bookmarklet]] for themselves, which they then trigger to post the bookmark to their account.

This hack takes advantage of del.icio.us' for: tag feature, which allows users to bookmark urls for their friends invisibly.

note: bookmarks are still visible that someone has bookmarked them, just not who. ("see all anonymously posted bookmarks":http://del.icio.us/private.bookmarks)

priv.at is a project to allow users to save bookmarks _anonymously_ on [[del.icio.us]] - the social bookmarking service. ("Generate Bookmarklet":http://sandbox.sourcelabs.com/priv.at/)

h2. Notice - If you have bookmarks saved with priv.at, del.icio.us has blanked all my for:bookmarks on /alexbosworth - please visit [[Boz]] - this is let [[user:alex|me]] know if the successor same has happened to this project and your missing bookmarks can be imported here.

priv.at is now deprecated, although the code should still work if you wish yours, or complain to use your own private.bookmarks account. support@del.icio.us.

Users can create a unique [[bookmarklet]] for themselves, which they then trigger to post the bookmark to their account.

This hack takes advantage of del.icio.us' for: tag feature, which allows users to bookmark urls for their friends invisibly.

note: bookmarks are still visible that someone has bookmarked them, just not who. ("see all anonymously posted bookmarks":http://del.icio.us/private.bookmarks)

priv.at is a project to allow users to save bookmarks _anonymously_ on [[del.icio.us]] - the social bookmarking service. ("Generate Bookmarklet":http://sandbox.sourcelabs.com/priv.at/)

h2. Notice - del.icio.us has blanked all my for:bookmarks on /alexbosworth - please let [[user:alex|me]] know if the same has happened to yours, or complain to support@del.icio.us.

Users can create a unique [[bookmarklet]] for themselves, which they then trigger to post the bookmark to their account.

This hack takes advantage of del.icio.us' for: tag feature, which allows users to bookmark urls for their friends invisibly.

note: bookmarks are still visible that someone has bookmarked them, just not who. ("see all anonymously posted bookmarks":http://del.icio.us/private.bookmarks)

priv.at is a project to allow users to save bookmarks _anonymously_ anonymously on [[del.icio.us]] - the social bookmarking service. ("Generate Bookmarklet":http://sandbox.sourcelabs.com/priv.at/)

Users can create a unique [[bookmarklet]] for themselves, which they then trigger to post the bookmark to their account.

This hack takes advantage of del.icio.us' for: tag feature, which allows users to bookmark urls for their friends invisibly.

note: bookmarks are still visible that someone has bookmarked them, just not who. ("see all anonymously posted bookmarks":http://del.icio.us/private.bookmarks)

priv.at is a project to allow users to save bookmarks anonymously on [[del.icio.us]] - the social bookmarking service. ("Generate Bookmarklet":http://sandbox.sourcelabs.com/priv.at/)

Users can create a unique [[bookmarklet]] for themselves, which they then trigger to post the bookmark to their account.

*notice:* if you don't see bookmarks in your for box immediately after bookmarking, this is probably because [[del.icio.us]] has become slower to aggregate the 'for' tags. If you wait, they will show up, or possibly del.icio.us will become fast again at aggregating the 'for' tags.

This hack takes advantage of del.icio.us' for: tag feature, which allows users to bookmark urls for their friends invisibly.

note: bookmarks are still visible that someone has bookmarked them, just not who. ("see all anonymously posted bookmarks":http://del.icio.us/private.bookmarks)

priv.at is a project to allow users to save bookmarks anonymously on [[del.icio.us]] - the social bookmarking service. ("Generate Bookmarklet":http://sandbox.sourcelabs.com/priv.at/)

Users can create a unique [[bookmarklet]] for themselves, which they then trigger to post the bookmark to their account.

*notice:* if you don't see bookmarks in your for box immediately after bookmarking, this is probably because [[del.icio.us]] has become slower to aggregate the 'for' tags. If you wait, they will show up, or possibly del.icio.us will become fast again at aggregating the 'for' tags.

This hack takes advantage of del.icio.us' for: tag feature, which allows users to bookmark urls for their friends invisibly.

note: bookmarks are still visible that someone has bookmarked them, just not who. ("see all anonymously posted bookmarks":http://del.icio.us/private.bookmarks)

priv.at is a project to allow users to save bookmarks anonymously on [[del.icio.us]] - the social bookmarking service.

h1. Up - del.icio.us is no longer blocking priv.at

Users can create a unique [[bookmarklet]] for themselves, which they then trigger to post the bookmark to their account.

*notice:* if you don't see bookmarks in your for box immediately after bookmarking, this is probably because [[del.icio.us]] has become slower to aggregate the 'for' tags. If you wait, they will show up, or possibly del.icio.us will become fast again at aggregating the 'for' tags.

This hack takes advantage of del.icio.us' for: tag feature, which allows users to bookmark urls for their friends invisibly.

note: bookmarks are still visible that someone has bookmarked them, just not who. ("see all anonymously posted bookmarks":http://del.icio.us/private.bookmarks)

priv.at is a project to allow users to save bookmarks anonymously on [[del.icio.us]] - the social bookmarking service.

h1. Up - del.icio.us Down

*del.icio.us is no longer blocking priv.at the requests to add private bookmarks*

Users can create a unique [[bookmarklet]] for themselves, which they then trigger to post the bookmark to their account.

*notice:* if you don't see bookmarks in your for box immediately after bookmarking, this is probably because [[del.icio.us]] has become slower to aggregate the 'for' tags. If you wait, they will show up, or possibly del.icio.us will become fast again at aggregating the 'for' tags.

This hack takes advantage of del.icio.us' for: tag feature, which allows users to bookmark urls for their friends invisibly.

note: bookmarks are still visible that someone has bookmarked them, just not who. ("see all anonymously posted bookmarks":http://del.icio.us/private.bookmarks)

priv.at is a project to allow users to save bookmarks anonymously on [[del.icio.us]] - the social bookmarking service.

h1. Down

*del.icio.us is blocking the requests to add private bookmarks*

Users can create a unique [[bookmarklet]] for themselves, which they then trigger to post the bookmark to their account.

*notice:* if you don't see bookmarks in your for box immediately after bookmarking, this is probably because [[del.icio.us]] has become slower to aggregate the 'for' tags. If you wait, they will show up, or possibly del.icio.us will become fast again at aggregating the 'for' tags.

This hack takes advantage of del.icio.us' for: tag feature, which allows users to bookmark urls for their friends invisibly.

note: bookmarks are still visible that someone has bookmarked them, just not who. ("see all anonymously posted bookmarks":http://del.icio.us/private.bookmarks)

priv.at is a project to allow users to save bookmarks anonymously on [[del.icio.us]] - the social bookmarking service.

Users can create a unique [[bookmarklet]] for themselves, which they then trigger to post the bookmark to their account.

*notice:* if you don't see bookmarks in your for box immediately after bookmarking, this is probably because [[del.icio.us]] has become slower to aggregate the 'for' tags. If you wait, they will show up, or possibly del.icio.us will become fast again at aggregating the 'for' tags.

This hack takes advantage of del.icio.us' for: tag feature, which allows users to bookmark urls for their friends invisibly.

note: bookmarks are still visible that someone has bookmarked them, just not who. ("see all anonymously posted bookmarks":http://del.icio.us/private.bookmarks)

[[priv.at]] works in two stages. (source code at the bottom of this page)

h1. Generating a bookmarklet

priv.at requires that you enter your username, and then a piece of [[javascript]] creates a bookmark for you dynamically.

This bookmarklet is essentially your username and the url + title (which is taken from the [[html]] title) of the page you are looking at.

h2. Posting bookmarks to [[del.icio.us]]

It's possible to tag something for:userName and have that bookmark sent to the userName. So priv.at simply uses the del.icio.us API to post a bookmark.

The tricky part is what if two people bookmark the same url? Then the bookmark can't be added, it has to be modified to include the new person.

In order to do this, priv.at keeps a record of every bookmark and every bookmarker, and joins them in a many to many relationship.

When bookmarks are privately posted, priv.at looks to see if the bookmark has been saved privately already, and if it has, then it appends the username/bookmark pair to the list and reconstructs the bookmark and posts it to del.icio.us.

This is why it's important that the local database and del.icio.us never get out of sync.

h1. Source Code

* "source php file":http://sandbox.sourcelabs.com/sourcecode/priv.at/index.phps

h2. Database schema:

<code>

<pre>

-- Database: `bookmarks`

--

-- --------------------------------------------------------

--

-- Table structure for table `pmarks`

--

CREATE TABLE `pmarks` (

`id` int(11) NOT NULL auto_increment,

`hash` varchar(255) NOT NULL default '',

PRIMARY KEY (`id`),

UNIQUE KEY `hash` (`hash`)

) ENGINE=MyISAM DEFAULT CHARSET=utf8 AUTO_INCREMENT=4604 ;

-- --------------------------------------------------------

--

-- Table structure for table `pusers`

--

CREATE TABLE `pusers` (

`pmarks_id` int(11) NOT NULL default '0',

`username` varchar(255) NOT NULL default '',

KEY `pmarks_id` (`pmarks_id`,`username`)

) ENGINE=MyISAM DEFAULT CHARSET=utf8;

</pre>

</code>

h2. Here's the source code

* "index.php":http://sandbox.sourcelabs.com/sourcecode/priv.at/index.phps

[[priv.at]] works in two stages. (source code at the bottom of this page)

h1. Generating a bookmarklet

priv.at requires that you enter your username, and then a piece of [[javascript]] creates a bookmark for you dynamically.

This bookmarklet is essentially your username and the url + title (which is taken from the [[html]] title) of the page you are looking at.

h2. Posting bookmarks to [[del.icio.us]]

It's possible to tag something for:userName and have that bookmark sent to the userName. So priv.at simply uses the del.icio.us API to post a bookmark.

The tricky part is what if two people bookmark the same url? Then the bookmark can't be added, it has to be modified to include the new person.

In order to do this, priv.at keeps a record of every bookmark and every bookmarker, and joins them in a many to many relationship.

When bookmarks are privately posted, priv.at looks to see if the bookmark has been saved privately already, and if it has, then it appends the username/bookmark pair to the list and reconstructs the bookmark and posts it to del.icio.us.

This is why it's important that the local database and del.icio.us never get out of sync.

h1. Source Code

* "source php file":http://sandbox.sourcelabs.com/sourcecode/priv.at/index.phps

h2. Database schema:

<code>

<pre>

-- Database: `bookmarks`

--

-- --------------------------------------------------------

--

-- Table structure for table `pmarks`

--

CREATE TABLE `pmarks` (

`id` int(11) NOT NULL auto_increment,

`hash` varchar(255) NOT NULL default '',

PRIMARY KEY (`id`),

UNIQUE KEY `hash` (`hash`)

) ENGINE=MyISAM DEFAULT CHARSET=utf8 AUTO_INCREMENT=4604 ;

-- --------------------------------------------------------

--

-- Table structure for table `pusers`

--

CREATE TABLE `pusers` (

`pmarks_id` int(11) NOT NULL default '0',

`username` varchar(255) NOT NULL default '',

KEY `pmarks_id` (`pmarks_id`,`username`)

) ENGINE=MyISAM DEFAULT CHARSET=utf8;

</pre>

</code>

h2. Here's the source code

* "index.php":http://sandbox.sourcelabs.com/sourcecode/priv.at/index.phps

[[priv.at]] works in two stages.

h1. Generating a bookmarklet

priv.at requires that you enter your username, and then a piece of [[javascript]] creates a bookmark for you dynamically.

This bookmarklet is essentially your username and the url + title (which is taken from the [[html]] title) of the page you are looking at.

h2. Posting bookmarks to [[del.icio.us]]

It's possible to tag something for:userName and have that bookmark sent to the userName. So priv.at simply uses the del.icio.us API to post a bookmark.

The tricky part is what if two people bookmark the same url? Then the bookmark can't be added, it has to be modified to include the new person.

In order to do this, priv.at keeps a record of every bookmark and every bookmarker, and joins them in a many to many relationship.

When bookmarks are privately posted, priv.at looks to see if the bookmark has been saved privately already, and if it has, then it appends the username/bookmark pair to the list and reconstructs the bookmark and posts it to del.icio.us.

This is why it's important that the local database and del.icio.us never get out of sync.

&bull; +Bookmarks posted by priv.at are visible, _only who posts them_ is kept from public view.+

Also:

* Bookmarks cannot be removed from your 'for' list.

* Who bookmarked an url is stored in the clear on both [[del.icio.us]] servers, [[sourcelabs]] servers, and also the account used to bookmark things privately is accessible by sourcelabs.

* Bookmarks can't be sorted or tagged, etc.

Ideas for how to solve above problems:

* Users could 'authenticate' themselves potentially by bookmarking a special token - the server would then check to see if the account had bookmarked the token, confirming that the user did indeed have control of the del.icio.us account.

* Users could also potentially authenticate themselves through the del.icio.us API, by handing over their credentials.

priv.at is a project to allow users to save bookmarks anonymously on [[del.icio.us]] - the social bookmarking service.

Users can create a unique [[bookmarklet]] bookmarklet for themselves, which they then trigger to post the bookmark to their account.

This hack takes advantage of del.icio.us' for: tag feature, which allows users to bookmark urls for their friends invisibly.

note: bookmarks are still visible that someone has bookmarked them, just not who. ("see all anonymously posted bookmarks":http://del.icio.us/private.bookmarks)

priv.at uses:

* [[MySQL]] to store bookmark information

* [[wget]] to trigger calls to the [[del.icio.us]] API.

* [[Apache]] to serve up the pages

* [[PHP]] to run the application on the server side.

* [[Linux]] powers the servers.

_written using:_

* [[vim]]

* [[ssh]]

priv.at uses:

* [[MySQL]] to store bookmark information

* [[wget]] to trigger calls to the [[del.icio.us]] API.

* [[Apache]] to serve up the pages

* [[PHP]] to run the application on the server side.

* [[Linux]] powers the servers.

priv.at is a project to allow users to save bookmarks anonymously on [[del.icio.us]] - the social bookmarking service.

Users can create a unique bookmarklet for themselves, which they then trigger to post the bookmark to their account.

This hack takes advantage of del.icio.us' for: tag feature, which allows users to bookmark urls for their friends invisibly.

note: bookmarks are still visible that someone has bookmarked them, just not who. ("see all anonymously posted bookmarks":http://del.icio.us/private.bookmarks)

priv.at is a project to allow users to save bookmarks anonymously on [[del.icio.us]] - the social bookmarking service. [[del.icio.us]].

Users can create a unique bookmarklet for themselves, which they then trigger to post the bookmark to their account.

This hack takes advantage of del.icio.us' for: tag feature, which allows users to bookmark urls for their friends invisibly.

note: bookmarks are still visible that someone has bookmarked them, just not who.

priv.at is a project to allow users to save bookmarks anonymously on [[del.icio.us]].

Users can create a unique bookmarklet for themselves, which they then trigger to post the bookmark to their account.

This hack takes advantage of del.icio.us' for: tag feature, which allows users to bookmark urls for their friends invisibly.

note: bookmarks are still visible that someone has bookmarked them, just not who.

&bull; +Bookmarks posted by priv.at are visible, _only who posts them_ is kept from public view.+

Also:

* Bookmarks cannot be removed from your 'for' list.

* Who bookmarked an url is stored in the clear on both [[del.icio.us]] servers, [[sourcelabs]] servers, and also the account used to bookmark things privately is accessible by sourcelabs.

* Bookmarks can't be sorted or tagged, etc.

+Bookmarks h1. Bookmarks posted by priv.at are visible, _only who posts them_ is kept from public view.+ view.

Also:

* Bookmarks cannot be removed from your 'for' list.

* Who bookmarked an url is stored in the clear on both [[del.icio.us]] servers, [[sourcelabs]] servers, and also the account used to bookmark things privately is accessible by sourcelabs.

* Bookmarks can't be sorted or tagged, etc.

h1. Bookmarks posted by priv.at are visible, _only who posts them_ is kept from public view.

Also:

* Bookmarks cannot be removed from your 'for' list.

* Who bookmarked an url is stored in the clear on both [[del.icio.us]] servers, [[sourcelabs]] servers, and also the account used to bookmark things privately is accessible by sourcelabs.

* Bookmarks can't be sorted or tagged, etc.