At $4.37 annual revenue per user, Facebook’s revenue would be $30B per year if it signed up every person on earth. #yg

I’m saying it: Facebook’s $100B valuation is nuts. Even if it signs up every person on earth, FB will only grow its customer base 10x.

AAPL retail profits were 20x AMZN’s in Q4, yet AAPL retail revenues were $3B smaller than all AMZN. Is brick and mortar getting revenge? #yg

Amazon still announcing record-breaking Kindle sales without providing numbers. If they were amazing, they’d cite them. http://t.co/MnDWxYAp

Fixed link: Two tablet sellers—Amazon and Apple—will report radically different results from the tablet boom. #yg http://t.co/dapk57Vq

@jjdempsey Thanks for noticing and letting me know — I’ll try tweeting it again with it linked properly

RT @allthingsd: Two tablet sellers-Amazon and Apple-will report radically different results from the tablet boom. http://t.co/ZZkqmEbt #yg

My Marketplace comment on the Facebook IPO: http://t.co/BDfIpOX0 via @AddThis Can it really earn enough to justify a $100B valuation? #yg

Nicholas Carr renews an idea I’ve talked about before: paper books bundling ebooks to boost publishing&readership. http://t.co/veWQ7f0J #yg

RT @cultofmac: Accuracy Of NYT’s Report On Apple Factory Worker Abuse Is Under Fire by BSR. http://t.co/suG0qZLW #yg