Basically I've got an LMHOSTS file that resolves hundreds (if not thousands) of known ad-ware sites to 127.0.0.1 (local machine). This prevents me from having to load ads. I got the list when those damn cover-the-browser flash ads started cropping up but I'm very happy to have it now that I've been forcefully throttled back to <56k. Keeps the extra resolutions and downloads to a minimum.

It's probably just listed in there as a primary ad site.