We're aware of the situation and trying to pin down what ad is causing it. A screenshot of the ad or of the whole front page (if either of those is possible...there seem to be differing reports about what happens when users attempt to load the front page) would be the most useful thing we need to help chase this down, so any help would be greatly appreciated.
Our apologies for the difficulties, and please bear with us until we get this cleaned up.
Here is a screenshot and URL

If you're so convinced it's the site, why isn't this forum flooded with questions about a malicious site warning? Thousands of people visit this site every day, and 2 people have complained about it. It's not the site, it's your machine.
WRONG!
I'm using Safari 4 on an iMac and have not left this site or been on any other site when this happened.