P/E should not be considered in a vacuum. The high valuation probably exists because there is a large expectation of earnings growth. I don't know if we can eye

P/E should not be considered in a vacuum. The high valuation probably exists because there is a large expectation of earnings growth. I don't know if we can eyeball a PEG on FBOOK yet as we don't have the proper data but it's probably much different than AAPL (and especially T!), at least in the eyes of the investors.