It's only a matter of time before they realize they can't beat google and the sad reality hits, they can't monetize. There's no way to monetize hundred millions of people around the world who don't have wallet or credit card. Likes is a good example of this. Even if people who use facebook have a credit card they are probably not in the buying mood. Friend tells me a product is good, one still uses Google to verify, unless he's a real bro and I trust his tastes. Likes is a good example of people 'paying' their useless attention which has no price. It's free anyone can give out 'likes' as many or as senselessly as they want. Instead of credit card, you get people's clicking action that supposedly builds you street cred but like this article highlights, it's mostly comprised of no significant value to the advertiser.