Social Bookmarks adds icons to your posts and/or pages that allow your visitors to easily submit them on social bookmarking and network sites.
If upgrading from a version before 3.2 and you have used your own bookmarks then you must move the folder from your theme folder to
wp-content - see the FAQ for more details
Social Bookmarks is an easy but powerful way to implement social bookmarking on your WordPress blog. Features include...
The plugin will display a row of social bookmarking icons wherever you add its code - for an individual post and page or in a sidebar. They are split between bookmarking services and tools (e.g. printing, converting to PDF, etc).
For full information on how to add the bookmarks to your site please read the "Other Notes" tab.