But I stopped after a few crazy-guests. Not horrible experiences, but enough to make me decide I had no desire to do so again. I'd often considered surfing, but since I deleted my profile it seemed a little cheap to look for a place to crash when I wasn't reciprocating myself.
These days it seems there are several alternatives to couchsurfing.com, with a less "corporate" feel to them.
Every host was nice, and even if we didn't 'click' it was still a great experience. And after four weeks of that I realized that I'd stayed in many corners of the city, knew a lot of the best places in those areas because my hosts would show me around, and felt like I'd lived there for much longer than just a month.
I can definitely recommend it as part of traveling, or even part of relocation. The occasional discomfort is offset by really getting to know a place quickly.