SciAm blog's Christopher Mims compiles a list of "duplicitous PR flacks who have run afoul of the science blog mob." It includes a PR frontman for Stuart Pivar, the guy who sued P.Z. Myers (the lawsuit has now been withdrawn). It also includes a political appointee at NASA whose 'real' credentials were outed by science blogger.
While on the topic of credentials, NYTimes reports that South Korea has been rocked by a series of scandalous exposés of high-fliers and celebrities (including a Buddhist monk) who have made inflated or false claims of academic credentials.