Not me, but folzgold does.

Not personally, but I know a few people who have had good experiences with it and some who have had mixed/bad experiences.

medyani is about to use it to adventure around for about 6 months. While I don't have any personal experience with it, in a month or so, she'll be able to share plenty of hers!

I have some friends who've used it and thought it was great, but also had a friend with a roommate who used it exclusively to host hot women and try to hook up with them. I suppose the upisde is you're more likely to have options and the downside is that you're more likely to have potentially creepy guys trying to sleep with you.

My friend Kelly (fuzzyila was a frequent couchsurfing hostess before she had a baby.

I hosted once (which was fine, really, though I learned that I do not like having strangers in my space), and have not yet been a couchsurfing guest.

i know some folks on metafilter.com who've had good experiences with it.