The warning page also comes up on FR pages that don't have any links to aim.org, or really any interesting content at all. (I reviewed the page source)
Firefox uses site ratings from stopbadware.org, and they apparently rely on Google data which may be site wide, not specific to a particular URL.
I think organizations that allege some other site is hosting malware should be ready to pony up some evidence - otherwise what they are doing is a unethical.
I think so-called online advertisers who don't review their content which lets malware into their ad-stream oughtta get their asses nailed to the wall.
It irritates the sh*t out of me that I had to use IE to see what the hell was going on with FR.