Just searched for THIA on google, and look what I saw on the first result: Was THIA's site/forums hacked? I guess I'll wait until confirmation that it is not compromised with viruses. And funny enough, I always used "Buy Cheap Cialis" as a shortcut to the forum index.
It shouldn't be hacked, Im sure someone (more useful than I) will look into it, bringing it to their attention now.
Google and FireFox both have some sort of system to determine when websites are "compromised". FireFox receives their information from users who self-report and I have no idea about Google but given they do web crawls I wouldn't be surprised if they didn't handle it themselves. Last time I got a warning through FireFox was when Digital Press had been compromised somehow (seemed like a forum exploit was used to get in and redirect users elsewhere though I never saw the symptoms) a few days after rumors were floating around on their forums about the problem. The next day they closed the forums with a message and brought them back a few days later. Few days after that they were taken down again. Whoever runs the place sure doesn't have the best of abilities to keep uptime at 100% without aiding in what appears to be a lack of patching.