Remember that video that was posted of a Lawyer given a talk to law students about never speaking to policemen? Remember how innocent things can be completely twisted and used against you?
Yeah, I'd worry about the NSA snooping in my calendar.
Unless the government puts explicit restrictions (not secret restrictions!) on how their resources (not just stored data!) can be used and actively punishes those using it improperly, then it should be assumed that all the resources at the NSA's disposal will be used for the convenience of the rest of the government.
FWIW, I'm not even from or in the US of A, but I'm worried about my government doing something exactly like that considering how much it's cooperated with the NSA directly in the past and present.
And how will they be treated? It seems: poorly.
sharing your calendar can be twisted against you.
not sharing your calendar can also be twisted against you ("you don't seem to be sharing your calendar like most of your fellow citizens, what are you hiding?")
see: mccarthyism.
Perhaps we should exercise our little grey cells more. Granted for a busy sales man or something that's impractical, but Im sure we could generally commit more exclusively to memory..
I posted this before, but to repeat... I think the legacy here is that we move more and more as a matter of habit or routine to a more secure way of living. No, we cant ever fully insulate ourselves from the NSA, but I think more and more of us will commit less to the internet, choose HTTPS via automatic extensions, use more secure software as a default, self censor, and so on.