SEO News

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. We've seen tremendous upheaval in the search landscape over the last two years.

  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. You're awesome. Your site is fantastic. You have great content. People think your site rocks – traffic is skyrocketing and you're attracting plenty of links.

  3. Peter Norvig offers an insider's look at Google Research during SMX West

    Image Rotation Captcha, which shows an image, but randomly rotats it and asks the user to rotate it to "up. At SMX West 2010 in Santa Clara, California, Peter Norvig, who spearheads Google's wide-ranging research efforts, offered a behind-the...

  4. SearchDay: It Pays to Link Consistently

    CAPTCHA Hacks For Gmail, Blogspot, Craigslist Causing ProblemsPosted by Frank WatsonSeems the hackers have found a way to work around CAPTCHA - the once great hope of stopping bots from spamming. Google tried to prevent this with a CAPTCHA, but it...

  5. Search Headlines & Links: March 10, 2008

    CAPTCHA Systems are Under AttackShould spammers ever succeed in breaking through CAPTCHA, a lot of social media web sites and blogs are going to have a big, big problem. Want a snapshot of the day's search marketing news?

  6. Sight-Impaired Users Have Problems with Registration Process at Google

    What's a captcha and why does Google (and other sites) use them? Captcha is an acronym for "completely automated public Turing test to tell computers and humans apart. "Is Google Shutting Out The Blind?