[austenallred]

Right, that's why I said it's not valuable in and of itself. It helps them make money, no doubt, but there's not much of a market for that data alone. The only other potential buyers would be the people who already have a platform to display ads.

But let's play devil's advocate and say they could sell the data for $100M (I think that's extraordinarily high). Given Facebook's 1.4 Billion monthly active users, that values the data at about $.14 per user.

Facebook's market cap is $270B ($187.5 per user). In other words, using obviously sketchy numbers, your attention is worth approximately 2,800 times more than your data.