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I've wasted most of the day reading this site:
25 Things About My Sexuality. It borders on meme-dom, but it looks edited and the responses are well thought-out, so it's quick reading without getting all "thirteen things my cat did today" on you. I first anticipated it to be moderately arousing; the stories tend to be frank and honest, and largely emphasize people's hangups and flaws in bed -- and all of them seem to be women so far.