Friday night I was on a layover in some horrible place (I will not say where so I dont offend anyone) and watched 20/20 on ABC at the hotel. They did a study of male/male and female/female public affection in different locations in the USA. Granted, 20/20 is about one step up from Inside Hollywood on the journalistic food chain...but the results were interesting.
Here is it if your interested.
ABC News: Gay PDA in Main Street USA