The Ticker: Chamber of Commerce; Earth Day PR fails; Foursquare & advertising; Sports PR disasters; ‘GMA’ tops ‘Today’

The EconomistCorporate lobbying: The Chamber of Secrets; The biggest business lobby in the United States is more influential than ever

GristThe weirdest, worst PR crap we’ve seen this Earth Day

AdAgeFoursquare Eyes June for Launch of New Advertising Platform

Bleacher Report20 Biggest Sports PR Disasters of the Last Decade

TVNewser‘GMA’ Gives Hat Tip to ‘Today’