it looks like they copies yahoo's page, moved their link to the top, added some more of their own and them put the page up on their own site.
I think what their trying to do is , when THAT page comes up in a search engine (AV, IS or EX) it looks like a Yahoo page. so someone doing a search, say on Infoseek will come up with a result that appears to be a Yahoo page and go there thinking there'sw credability.
be interesting to see what Yahoo thinks about it :-)