I do but I try to only wear ones that aren't offensive to religious people, and like the ones that only atheist would understand. Its cool when you walk by another atheist and by their reaction to the shirt you can tell they get it and are an atheist too. I wear The Four Horsemen shirt from this site http://smartapparel.spreadshirt.com/ and get quit a few comments from atheist and christians have no idea its an atheist shirt.
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