This post originated from an RSS feed registered with .NET Buzz by Doug Thews. Original Post: Preventing Blog Comment Spam Feed Title: IlluminatiLand Feed URL: http://apps5.oingo.com/apps/domainpark/domainpark.cgi?client=netw8744&s=JETBRAINS.COM Feed Description: A technology blog for people enlightened enough to think for themselves Latest .NET Buzz Posts Latest .NET Buzz Posts by Doug Thews Latest Posts From IlluminatiLand

I really like Major Nelson's Xbox blog and the new capability implemented to get rid of comment spam. Now, when entering a comment, you're asked to enter a security code based on a random image of a text string (a process known as Captcha, or "completely automated public Turing test to tell computers and humans apart").

A lot of 3rd parties are writing Captcha plug-ins for blogging software. For MovableType users I saw this interesting plug-in for blog comments from James Seng. He even wrote an MT plug-in that checks host URLs to try and capture trackback ping spam.