europeforvisitors - 11:48 pm on Dec 4, 2005 (gmt 0)
Why does G sponsor such sites? Might as well ask why G sponsors all sorts of copyright infringing and content scraping sites.
I don't think it's honest to say that Google "sponsors" such sites. Google may tolerate infringing sites (at least until the copyright holders file DMCA complaints), but that's different from actively sponsoring them.
Some other advertisers review each and every website on which their adcode appears. Google does not.
To maintain the kind of quality that you and I might like, they'd have to review every page, not every site. I doubt if any ad networks do that.