Facebook ads are less compelling from the supply side, but in some cases more impressive from the demand side. Companies like Groupon make extensive use of Fac

Facebook ads are less compelling from the supply side, but in some cases more impressive from the demand side. Companies like Groupon make extensive use of Facebook's demographic targeting, for example, and local advertising is only going to grow over the next five years. Facebook is also finally moving into virtual currency, with the launch of Facbeook credits. Did you know Zynga is the second largest PayPal merchant after eBay itself?