We recently began using Twitter as another mechanism to communicate with our community.  We have a generic screenname you can follow for Mozilla QA news: MozillaQA

There are a few other Mozilla specific Twitter feeds that you may want to follow if you want to keep up with what is going on in the project:

http://twitter.com/MozCommunity

http://twitter.com/planetmozilla

http://twitter.com/mozillanews

Or you can always search for "Mozilla" or "Firefox" in the "Find People" section of Twitter to see if there any other users you might want to follow.