Spammers are taking advantage of Google giving higher ratings to .edu pages. I thought it was just limited to to keywords like the “buy V” word and such. But as it turns out it doesn’t.
Earlier this week there was a whole discussion on how google handles hacked webpages and how quick and smooth it does it. It appears google claims that this system is still too weak to effectively improve rankings. Google still has to prove they can deal with spam attacks from large spamming networks as part of the SEO black hat game for a while.