Google Blocks TwitPic Over Malware Threat, Then Restores Access
This evening, however, Google's weekend engineers managed to reverse the block, but we're still seeing it blocked sporadically. At the very least, this acts as confirmation that TwitPic isn't actually malicious, and you shouldn't worry over linking to it or hosting your own images there.

Talk about just in time: tomorrow night, we're guessing that millions upon millions of New Year's Eve images will flood TwitPic's servers, and having this kind of message attached to 'em would've been truly awful.