katie choric in an interview airing this week. >> not like you are letting a stranger into your home.have been high-profile stories about sex parties, property damage. >> it is incredibly rare, thousands and thousands of people from the community. melissa: does that mean air b&b is free? jo lin kent, hillary kramer and jim frischling, he says it is not like letting a stranger into your home. his whole business model is letting strangers into your home. what is he talking about? >> he is referring specifically to there are some terms at air b&b's web site and individuals you cannot have certain types of things. for example i have used air b&b before and it works very well in that instance but there were specific house rules, no parties, no dinner parties. there are some -- melissa: there have been a lot of problems. might want to spell that out specifically. >> this community business which it is, for it to work the community has to play fair with each other and i have concerns that it loses confidence and safety shoes it starts to fall apart. i had some bad experiences and those thing