100 Billion valuation of FB would put its P/E ratio at around 100 – that's high Here's how I think about Facebook's valuation: I compare to Google. Facebook is

100 Billion valuation of FB would put its P/E ratio at around 100 – that's high Here's how I think about Facebook's valuation: I compare to Google. Facebook is the only player that can challenge Google's supremacy. Today, in terms of time spent, they are equal to Google. So at a minimum, they should be worth a quarter of Google's value. Maybe half. Probably not quite as much as Google yet, but close. Guess what. Google is at $200B. So valuing Facebook at $100B looks very reasonable to me. I'd say that at $50B, it would be a steal.