At this point, when you see a sufficiently large American business you should instantly assume they are deep in bed with American intelligence and probably the defense industry too. Just a friendly heads-up to anyone that was holding out for Yahoo and Hotmail to protect their whistleblower status or store their state secrets.
> At this point, when you see a sufficiently large American business
No need to single out American business, this is just as true - if not more so - for e.g. Chinese business. It is probably true for any business which hails from or mostly does business in a country with a significant military/intelligence apparatus.