I have installed a new bookmarking plugin called Sexy Bookmarks which you can find underneath every post. (http://www.happysus.com)
Sexybookmarks is a wordpress plugin that integrating your blog posts with the most popular social media websites – it enables the reader to share content they find useful and enjoy and helps out the blog owner by bringing in new visitors.
I chose this plugin because it enables me to integrate my blog content with the social media sites I want. I had found in the past that some plugins didn’t support certain bookmarking sites, while others did and I ended up having to install two plugins rather than one which did the job.