From one of the nigritude ultramarine threads at High Rankings: Nigritude Ultramarine is Google's secret plan to find all the amateur SEOs in the world so they can apply "double secret probation Adwords over-optimization Hilltop Sandbox bad-dog-no-bone" penalties.
Seriously, though, I think it's safe to assume that search engines will study this competition. Why wouldn't they - every pathetic spam technique imaginable is in evidence here.
It's amazing - incompetent Black Hats are revealing their ultra-expensive link farms just to win an iPod... and so far, "quality links" are holding their own anyway. Watch out for that double-secret probation, guys.
White Hats, don't forget to stop by and get your free nigritude ultramarine links from my Webmaster Resources Directory. Submissions will only be accepted if I can't find your link farm.