One Of Facebook's Advertising Partners Has Quit Because The Margins Were Lousy

Compass was one of Facebook's "preferred marketing developers" (PMDs). The exit ought to scare some of them. Venkatachari tells us that his company saw only "diminishing margins" in the Facebook ad business:

Link de la noticia: 
http://www.businessinsider.com/compass-labs-quits-facebook-ad-business-2013-10#i...