I've written a plugin that adds bookmarking links to your posts. It has an AJAX options panel for selecting which links to display as well as modding their order. Comes with its own css to give further control over the display.
Here's a list of the included links: Blinklist, Delicious, Digg, Fark, Furl, Newsvine, Reddit, Spurl, Technorati, Wink, Yahoo MyWeb
Here's the plugin: http://no.oneslistening.com/291