[yeukhon]

I think your concern for privacy has no respect for the individual accomplishment. Facebook, like many other for-profit organizations, will always monetizing user data. You have the choice of not using it. The outcome of their research has impact from environmental to computer science. You may disagree how a for-profit should run, but I respect the people who work there performing top tier research. You'd think all of the DoD research grants are less sinister? Perhaps we should never accept any grants from the DoD so none of them goes into military action based on your sentiment of social responsibility.