Hedge funds in cahoots with the NSA could for example predict currency/stock prices with all the extra information. Powerful businessmen/politicians could use i

Hedge funds in cahoots with the NSA could for example predict currency/stock prices with all the extra information. Powerful businessmen/politicians could use it to blackmail others into getting their way using the private info. You can sorta trust the good intentioned nerds over at google to not abuse the private info - but faceless people over NSA is a different matter.