Well this has got to be a major problem since it is a wiki website . and also the fact that spam is just on the rise and it is really becoming to difficult to control it . One can see examples on social networking websites . Although it has now been declared that all links on the site would be tagged as "No Follow." That means, in essence, that the links become invisible to search engines like Google's. The engines won't take the links into account in ranking search results. Wikipedia is adopting the policy to reduce spammers' incentives to add spam links to the encyclopedia.
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