If you're a regular reader/commenter to any of the Gawker sites (Gawker, Lifehacker, Gizmodo, Jalopnik, fleshbot, wait what?!), you should probably change your passwords... If you comment using your facebook credentials you should be ok however.
They (gawker) is saying password credentials are encrypted but it couldn't hurt to change it.
Forbes' take on the issue -> http://blogs.forbes.com/firewall/2010/12/13/the-lessons-of-gawkers-security-mess/
More about it from the horse's mouth -> http://gawker.com/5712615/ "yes, the irony is not lost on us."