Like Stoney says, only share what you are comfortable with. Yes, it is possible to track us down electronically, but it would take effort on someone's part who has the knowledge to do it.
I am comfortable because I am legal, but to be honest, if I were not legal, I would have at least some concern.
With that said, I also need someone to share the experience with and I feel that I can participate in this community more safely than sharing with my friends. Even being legal, I do not tell the world that I am a grower.