Search engines against comment spam

Google is announcing the idea of a rel="nofollow" tag on individual links. Forums, blogs, guest books, and others who allow the public to add text and links by themselves, can tell search engines that the links are not necessarily approved by the page and should be treated as untrusted.

These links shouldn't be factored into search engines ranking calculations as a vote from the page they occur on. This means that adding comments as "Visit my discount pharmaceuticals site" or "Buy cheap Rolexes here" with a link to a spam page, to boost their link population and author text becomes less attractive to spammers.

Boitho, as most search engines, will support this tag. Related Announcements: Google Msn search Yahoo Searchenginewatch

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