The Social Share Count API enables users to count inbound and outbpound clicks from the ShareThis platform buttons and links. ShareThis lets you share to all of your profiles, blogs, friends and contacts. If you see something you want to share, simply click the ShareThis button on the webpage or your browser plugin for instant sharing. Use the Social Share Count API to get access to total sharing activity for a URL. Use it to display share counts on your social buttons or anywhere else in your application.
At the bottom of many blog posts (including this one) and website entries you're likely to find a widget that allows sharing to social sites or emailing to a friend. ShareThis competes with other systems like AddThis and SocialTwist to give publishers an easy-to-install sharing method.