johnhh - 9:01 pm on Jun 1, 2012 (gmt 0)

Yes, this came up in a recent BBC documentary on Facebook, the question was asked to a Facebook executive why just liking a product created an advert without specific user permission

The executive was unable to answer the question.. which was fun to see him squirm.

The documentary wasn't very good as they just used an old documentary and added some new bits.