This Wordpress site has a cool little social media bar that floats along with the page as you scroll. It has stuff for bookmarking, rss, twitter, facebook, and more. HOw and what is it? How do I get it? http://www.inautonews.com/
http://www.wibiya.com/ For what it's worth, I think those bars are too flashy and distracting, and they could lead people away from your site. A few small icons in the corner of a page is good enough for me.
Where you talking about what Cash Nebula said -- wibiya? Or were you thinking of the Sexy Bookmarks plugin for wordpress? http://wordpress.org/extend/plugins/sexybookmarks/
I agree. Instead, I would go with Digg Digg or Sharebar: http://bufferapp.com/diggdigg http://devgrow.com/plugins/sharebar/