This question prompted by this post on the blue.
Hiding salary information is bad for workers, especially bad for women and minorities, and good for employers. So I feel a lot of pressure to be more open about mine. Simultaneously, I find sharing the information terrifying and worry about the consequences to myself. I would appreciate hearing stories (the good and the ugly) about times you have shared your salary or other people have shared their salary with you, and any advice from HR/other about the safest ways to do this.