Apple fixed its iBooks Author EULA so that it does not claim exclusive distribution for books published in formats other than .ibooks.

Ads vs transactions: FB’s 2011 revenue: $3.7B on 845M users. APPL’s 2011 iTunes store revenue (no hardware sales): $6.4B on 224M users. #yg

More FB skepticism: RT @DavidGoldmanCNN: Phenomenal story from @LaMonicaBuzz on why Facebook isn’t worth $100 billion. http://t.co/eXeyJYqo

@asymco Sorry, screwed up math. If Apple had Amazon’s PE, it’s stock would sell for $4,550 and its market cap would be $4.2 trillion (10x).

@wilkos I’m not convinced. All data I’ve seen says that social advertising is monetized at a far lower rate than search advertising.

@asymco If Apple had Amazon’s PE, it’s stock would sell for $1,579 per share, and it’s market cap would be $1.47 trillion.

@jtemple Nice piece James! Limits to FB growth are interesting; even if all earth joins FB, that only generates $30B revenue @ $4.37/user.

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