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Email Spam Captcha

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  1. Recovering from Penalties, Penguin, and Panda

    Clean up the spam and close the comment spam loophole by doing things like putting nofollow on links to discourage it and using CAPTCHA for comments. User generated spam like un-moderated comments could also trigger a manual action.

  2. 10 Website Quality Indicators That Can Sink Your SEO Battleship

    Captcha won’t stop your spammers, so don’t make that your “stop all” method. It can take relatively few instances of comment spam to wind up with a manual penalty. Use a good spam scrubbing software to flag bad comments, limit links, and make sure...