I never had expectations of any privacy. Hackers are too clever and corporations mine data to foster marketing and advertising. This has been going on since 'Al Gore invented the internet' and it was commercialized in the 90's.
The pace is picking up as technology improves dramatically and nearly everyone uses the 'net.
Think about the enormous power of the NSA software that can collect, manage, filter and comb through all the data and find actionable nuggets in the counter-terrorism effort. Think, also, how effective (so far)this massive effort has been in preventing a second 9/11 in the U.S.
How much privacy are we willing to trade for security? The answer doesn't matter much because, well...TINPOTI!