Facebook wants to know what every single user in his territory likes. With liking fb pages, people will categorize themselfs all by themselfes. And that's exactly what FB wants to have. Nowdays Facebook's Advertising is good but not perfect. They could have it much better. But imagine advertising with Facebook, if you can choose fb pages in your campaing, that your target customer likes. Let's say you want to promote an ebook about golfing. Creative as you be, you will find a couple fb pages, which a golf playing person could 'like' [not longer be fan of]. golf hotels, golf brands, golf websites. And you will only pay for impressions exactly on those profiles.... i don't know what you think, but for me, that smells like big mula 