ah I was right
Blog abbreviation for Whiney Ass Titty Baby; "new one from Atrios -- coined for Harris of the WaPo and Keller of NY Times," i.e. someone who makes excuses instead of doing the courageous thing. The WATB reporter wrote what he thought would please the management and readers, and would be politically correct, instead of actually researching the facts for his article.
http://www.urbandictionary.com/define.php?term=WATB
I got about as much respect for urbandictionary as I do wiki, but I must say that snap is old skool and not nearly as poetically rich as little red-headed stepchild (which Drew has used, too), both being regional expressions of contempt, strongly associated (in AA culture) with emasculation of black men.
Hope you appreciate it's cross-over appeal to post-racial bloggers of a certain age. Diversity is the key to economic and political evolution.