• http://www.michael-martinez.com/ Michael Martinez

    Forum operators should either embed “rel=’nofollow'” on profile and signature links or make those sections of their sites unavailable to the crawlers. It doesn’t stop link spammers but it diminishes the negative impact they may have on a site’s performance.

    Websites that can use TCP Wrappers to block unauthorized access to services SHOULD use them.

  • http://www.nathanielbailey.co.uk Nathaniel Bailey

    You could do quite a bit try and combat this sort of spam happening to your members site, stopping bots from crawling those pages aint the only way to help combat it! Have a read of a post I have done on the subject at http://www.nathanielbailey.co.uk/2011/seo/a-word-of-warning-to-all-sites-with-membersprofiles/

  • http://blogpestcontrol.com Thomas Ballantyne

    All I can say is bravo. Whomever came up with “Link Laundering”… Bravo.

  • JohnCrenshaw

    “These links are mostly disregarded by search engines, and nearly all discounted at first”
    Not sure what you mean by this. The search engines are not capable to detecting these links unless the hacker makes them totally obvious. There are a thousand ways a hacker could make certain the link counts.