Wikipedia has added nofollow on their outbound links, after a surge of new spam due to GlobalWarmingAwareness2007 SEO contest. “nofollow” is a link attribute which tells a search engine that it should not follow the link, so the link will not get pageRank or any other benefit for being on wikipedia.

Every outbound link, even those on user pages, now uses rel=nofollow, no exceptions. The move will help wikipedia to cut down on the amount of spam.

Wikipedia Mailing List Message about the official decision.

[via SearchEngineJournal]

Technorati Tags: wikipedia, mediawiki, nofollow, search engine

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