Facebook has had a rough year following their much anticipated IPO in May. The stock started to tumble immediately after launch losing up to 50% of its value within months. The biggest hurdle that investors saw was pretty clear. How does a completely free service make money?
This is a viable question though Facebook does seem to have some leverage with their large user base. The question of course is how to get the most out of said users without crossing the line. To date Facebook has listed several attempts to monetize the network with some sounding better than others.