Current Boycotts from "Ethical Consumer": http://www.ethicalconsumer.org/boycotts/currentboycotts.aspx
Air Transportion: "Flyers Rights"
Automotive: "Hybrid Cars"
Environmental: "Climate Counts"
Political (conservative): "Reason"
Political (progressive): "Mother Jones"
Political (progressive): "The Nation"
Political (progressive): "Public Citizen"
Political (general): "New Republic"
Political: "Pinocchio Fact Checking"
Shopping: "Good Guide"
Shopping: "Shop Smart"
Shopping: "Greener Choices"
Technology: "C/NET" (product reviews)
Technology: "EnGadget" (product reviews)