I want to add a onsite social bookmarking system to a WordPress installation. is there any thing like this available?
I think SexyBookmarks is the best http://wordpress.org/extend/plugins/sexybookmarks/. There are some others
I looked around for something like that a while back and couldn't find what I wanted, so I started working on this plugin:
Its still at a kind of early stage, and many of the features I plan to build into it aren't finished, but you can take a look and see if it meets your needs.
This simple yet easy-to-use plugin adds Facebook Like & Share,Twitter,Google +,Pinterest,Digg Buttons after post contents.