I'm hoping this is a glitch judging by some of the other posts here... about 20 blogs nuked completely from their index and they are all legit/non spammy. I did get hacked about a month ago with one of those crummy redirect injection things but fixed that. I've spent more time over the last several months combating spammers than creating useful content. Might have to start flipping burgers to pay the bills. Oh wait... I forgot... Obama willl save me!
Probably a good idea for everyone to check and see if their site is still in Google. Seems to be at least a few other people reporting it: http://www.google.com/search?hl=en&q=site%3Agoogle.com&btnG=Google+Search
Wow...Did you hear of the stimulus package for the bloggers as well? !! If you did....I am in the line as well...
what is the site's URL if google has detected redirection URLs that lead to virus sites or you have been reported then google will consider it harmful and issue a warning when people search and/or try to access your sites is that what happened to you ? or you were just deindexed ? did you check you webmaster tools for any warnings or ways to resolve the issue ?