I'm FB valuation agnostic because I don't have enough information to properly value it. We can talk about PEG but since they are not yet a public company they d

I'm FB valuation agnostic because I don't have enough information to properly value it. We can talk about PEG but since they are not yet a public company they don't issue guidance. Also, if revenue was based solely off userbase, then GOOG (for example) would not be at its current valuation. Does the current valuation of FB look less sky-high if we assume ARPU grows by 30% annually for 5 years?