I saw the UNICEF one today Colin. Hank's right, it's the Google ads, and the way they run. I'm not sure if the ads run the same way their email does, but it scans text for keywords, and posts the ads accordingly. Like Hank said, every now and then it just throws in the generic ad.

Browsers, firewalls, and data miners have nothing to do with it. It's good to take precautions with all of those things, but they aren't what's affecting the weird banners.