A multitude of Yahoo sub-domain sites are filling up the world wide web.
Other day Aaron Wall has posted a list of big Internet players who are using its sub-domains to spam Google.
"Affiliate marketers have been renting pre-sell pages for a while now but I never thought they would be renting them from the second largest search engine. Obviously the affiliate has been very clever and given the chance most affiliates would do exactly the same. Yahoo has been a bit too keen to make money and is sacrificing their brand equity by pulling stunts like this but the real problem is Google blindly trusting spam sub domains."