PSA to everyone: be selective (think "PM") when sharing location-specific info or when offering to hook people up on a large scale. the recipients of your publicly-broadcasted info might not "pay it forward" or even contribute to this thread. (i had to learn this the hard way).
What he said.
In simpler terms, a lot of us are building trading relationships. Passing tips for fave haunts is nothin' but a PM thang, currency in building them. You give to get and vice versa.