I just read this story from Jack Humphrey’s Friday Traffic Report:
http://www.jackhumphrey.com/fridaytrafficreport/reviews/killer-social-marketing-tool-for-firefox/
Even though the tool in still in development phase, it sounded good. It basically allows you to check to see if a site or blog has already been submitted to Digg, StumbleUpon, and other social media sites before you submit your version.
This is a time saver…
I’m loving it. Been using it a bit more and you can really get a lot done. Way better than the ShareThis addon imo.