A number of times. Some people have a positive reaction and you make a new friend; some people will be silent and spread rumors. I stand up for the things I believe in, so I will tend to always be outspoken on the subject. I think Pillar's advice is fare, but doesn't take into account anything beyond absolute "safety". That advice comes with its own problems. As long as you conduct yourself a certain way, you don't have to worry too much. Many people will not be happy spending their lives in the closet, and some like myself, like to discuss the topic out of their own interest, possibly making people more tolerant in the future.