We're trying to sort it out but there isn't really any information provided by Google/Chrome to go on. The best "details" they have show that Twitpic has 0 pages with Malware.
Crazy how some automated process at Google can kill an entire site just like that.
http://support.google.com/webmasters/bin/answer.py?hl=en&...
Google bases its entire company around automated processes. Sites are made and killed by Google's automated processes every day. If you want to ask Google about it you will be talking to yet another automated process.
http://safebrowsing.clients.google.com/safebrowsing/diagnost...
What happened when Google visited this site?
Of the 12592 pages we tested on the site over the past 90 days, 31 page(s) resulted in malicious software being downloaded and installed without user consent. The last time Google visited this site was on 2012-12-31, and the last time suspicious content was found on this site was on 2012-12-30. Malicious software includes 13 trojan(s), 4 exploit(s). Successful infection resulted in an average of 8 new process(es) on the target machine.
Malicious software is hosted on 5 domain(s), including mpchester.info/, malatyuhr.com/, iloveeu.info/.
2 domain(s) appear to be functioning as intermediaries for distributing malware to visitors of this site, including 2upmedia.com/, adexcite.com/.
This site was hosted on 3 network(s) including AS36351 (SOFTLAYER), AS15169 (Google Internet Backbone), AS31815 (MEDIATEMPLE).
Has this site acted as an intermediary resulting in further distribution of malware?
Over the past 90 days, twitpic.com appeared to function as an intermediary for the infection of 1 site(s) including ow.ly/.
edit: ack. just read his twitter feed and it looks like he's out for a week.