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Forum Moderators: martinibuster
search engines dont like it because when done correctly
when done correctly it can significantly boost rankings
and brings up some ethical editorial questions.
if you go down this road do your research first so you understand the risks, rewards and the right and wrong way to do this.
Neutral if it is done with java and/or has nofollow. Negative if its a normal HTML link and you're the party adding them to your site.