Well, I've added a CAPTCHA ( Completely Automated Public Turing Test to Tell Computers and Humans Apart  ) to the OpenNETCF Wiki.  That should just about kill all this Nigritude Ultramarine SEO Challenge (no link intentionally) bullshit going around from our perspective.  While the challenge itself is interesting, it's taken many people down the spammer path to try to get to the top, making me hate the challenge presenter Dark Blue (again I refuse to link there).