The Atheist Recruiting Machine
America has long dotted its landscape with billboards that advocate a relationship with God. (A Southern favorite: “If you think it's hot here, imagine hell.”) Ads that suggest shunning Him, however, are newer territory.
http://www.thedailybeast.com/blogs-and-stories/2009-11-03/should-atheists-evangelize/?cid=hp:originalslist5