When I was commissioned, we were even advised not to have our names published in the nationals (Times, Gazette, etc). Why make it easy for the enemy (as it was then, I know EVERYONE is our friend now!) to find out background about you?
Would you regret posting anything once you're sitting in an I****** interrogation room?
It's all part of the online networking culture. That's why peeps appear so happy to divulge their inner most secrets on Faceb00k et al.
Peoples' idea of security (including personal security) have become very complacent. The security people need to give better advice and thrusters need to think more carefully about about how they are compromising themselves and those around them.
Yes I know my life story is on the interweb, but I didn't put it there until I left.
IMHO