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Forum Moderators: martinibuster
The pure SERPS are on Alltheweb and Altavista. Y! then takes these and blends a subdomain penalty and promotes YSM! search partner sites to produce the Y! SERPS.
Yahoo (Google, and many other sites) use subdomains (for instance, to seperate services, like adsense.google.com), so I dont understand having a subdomain penalty.