It's been primarily speculative, but many people have suggested that Facebook's Ad platform works because American companies can easily target Americans because

It's been primarily speculative, but many people have suggested that Facebook's Ad platform works because American companies can easily target Americans because they know something about the market they're trying to hit. I'm probably wrong in my assumptions, but I would think it would be pretty difficult for some targeted ads to work in foreign countries. I don't have a bias or anything, I'm just summarizing the feeling I've gotten from reading numerous reports online. Here's a thread about how Facebook's costs are growing: http://news.ycombinator.com/item?id=445630 http://news.ycombinator.com/item?id=445630