RhinoFish - 4:10 pm on Jan 7, 2013 (gmt 0)
for some things, Facebook ads can drive a lot of traffic, though ROAS is hard to control (but it can be done).
as for likes and follows, bleh.
disclaimer: we data driven marketers have strengths and weaknesses - am not claiming our way is THE way. our way is often a very good way, but the rare exception we may miss, can be a grand one.