[benatkin]

I think there's a bit of a false dichotomy between sharing what you're doing and keeping it secret. There are many different levels of openness and secrecy. People often err on the side of being too careful by not even talking about the problem space they're passionate about with others. People also err on the side of telling people about ideas they haven't even got around to exploring. Derek Sivers wrote a nice post about erring on the side of being too open, yet he is very talkative.

http://sivers.org/zipit

I'm not very good at picking my battles when it comes to sharing my technical interests but I'm getting better as I get experience.