The ShareThis widget that lets you email and bookmark content across the Web has added a Digg count to its button. Click on the ShareThis widget on a site where it's been added by the content publisher, and beside the Digg link you'll see, in parenthesis, the number of Diggs that particular piece of content has already received.
The actual capability of this new Digg count is already quite popular as a browser plug-in, from services like AstonishMe, DiggClick and Interclue for Firefox. But having it included in a bookmarking and content-sharing widget such as ShareThis is a testimony to the type of increased functionality being layered into these tools. AddtoAny has recently tweaked its comparable bookmarking and content-sharing widget to provide the most popular sites you use based on your behavior. Both ShareThis and AddtoAny have provided stats tools so publishers can analyze the actions around users sharing their content.
To further along the development of practical functionality being added to bookmarking and content-sharing widgets, ShareThis has also added support for the "Post" tab for four more sites; hi5, Friendster, Orkut and LiveJournal. The "Post" tab enables site visitors to post publishers' content directly to their social networking profiles and personal blogs.