Wait until Facebook becomes a standard form of payment on and offline.

Theres nothing juvenile about that. What started as The Facebook for select college campuses has quickly evolved and continues to evolve into the Facebook of the web, and even increasingly the Facebook of life. This may seem like an exaggeration, but were already seeing more and more Facebook connections to the physical world, and with consumers carrying Facebook around with them in their pockets via mobile devices at all times, it stands to reason that this phenomenon will only increase. Facebook Places is still in its infancy mind you. This may sound like the ramblings of a Facebook fanboy, but thats not what this is about. Its just whats happening. Facebook will never be for EVERYONE, but its user base is already substantially bigger than the entire population of the U.S.