Why is Facebook adding fake likes to ads?

Ever since Facebook added ads to the iOS app, and I saw that people "Liked" the ad / company. I had a sneaking suspicion it wasn't true.

So I just asked one of my friends if they had liked "Cox Communications", and sure enough they hadn't.

http://i.imgur.com/THUbS.png

So why does Facebook think its OK to lie to their consumer base?

How can we get this stopped?