I have looked at Shareaholic, the super-charged link sharing tool for Firefox, before in the past, however, there have been many new features and renovations since the last time I checked out this power house of a Firefox extension.
I thought it would be worth the effort to re-introduce you to this fine add-on for Firefox.
What is so Special About Shareaholic?
The main idea behind Shareaholic, is to be the ultimate add-on for the link sharing addict.  It works with Facebook, [...]

If the Web can be a more social experience, then why shouldn’t the Web browser follow?
Enter “The Coop”, a Mozilla Labs project to experiment with adding social tools to the web browser. We want to create a fun and easy way to share links with your friends, and to browse the set of links that friends have shared with you. We also want to make it easy to “subscribe” to a friend in order to make it easy to [...]