My experience with Trampolinn (hint: it sucks)
Travelisfree wrote an article a week or so ago regarding Trampolinn, a French-based home sharing network, similar to AirBnB. Unlike AirBnB, the active currency is points rather than money. You can easily earn points just by signing up, and could buy a set of 3500 points for as low as $99 euros (for reference, you could get a nice apartment in an ideal city location for around 400 points). It looked like an incredible opportunity for us travel hackers. I tried it out, and my experience shows that it sucks.