The excellent (and fun!) Mighell Marker, a Legal Technology Weekly, Volume 11, Issue 26 September 12, 2010, alerts us to this:
Marcus Zillman’s Factchecker Directory (homepage):
“The Directory of Fact Checkers is a Subject Tracer Information Blog designed to be a comprehensive listing of the available fact checkers and sources on the Internet and is being compiled and edited by Internet expert and guru Marcus P. Zillman, M.S., A.M.H.A. and Executive Directory of the Virtual Private Library” (link to Directory)