To quote from Emily Orr:
"Gawker currently comprises Gawker, Gawker.TV, Lifehacker, Deadspin, Kotaku, Gizmodo, Jalopnik, Jezebel, io9, Fleshbot (NSFW, if you couldn't figure it out from the name), Cityfile, and possibly New York Daily News. If you were signed up to any one of these services, your account name and password ARE out on the internet."
Change your passwords NOW.