I am a student from the Netherlands, and currently I am doing my internship at Roomsurfer.com. This is an internet platform that helps tourists find a place to stay at a local. The benefit for the tourist is that he has a local who can show him around a little bit, and thell him some do's and dont's. The profit for the host is that he can make a small amount of money by renting his couch or a bed, and ofcourse expand his international network.
The advantage of Roomsurfer compared to other pages is that RS connects tourists and hosts by using social media and their common interests. So you will always end up with somebody who has the same interests as you have.
The webpage is not finished yet, but we are in the BETA-phase. Could you have a look on the webpage, and tell me what you think about it? And if you are enthousiastic, you can ofcourse sign up as a host.