CouchSurfing.

If you travel a bunch out of a back pack, you probably know what the Couch surfing website is all about. A social network for travelers. People offer up their couches to people they don't know , and people they don't know come sleep in their home. When put like that, it sounds creepy.
  I just recently had a couch surfer come stay on the couch in the bus for a few days while she was here attending a seminar at the center for sexual health and pleasure. Thanks Bianca for not murdering me in my sleep, we enjoyed your company.