While many Americans may only be vaguely familiar with the idea of "cruising," there is a secret world of sex between men that exists in public places across the country. The police officer who arrested Sen. Larry Craig, R-Idaho, in a men's restroom at Minneapolis airport for allegedly looking to engage in gay sex wrote in his June report that he "recognized a signal used by persons wishing to engage in lewd conduct." ...Public places like men's restrooms, in airports and train stations, truck stops, university libraries and parks, have long been places where gay and bisexual men, particularly those...