http://www.nma.tv Web start-up Airbnb has benefited from the recent tech boom.It just raised $112 million US dollars from investors.It is now valued at $1 billion. Although Craigslist allows those wishing to rent out their homes to travelers,it has a sketchy reputation. Airbnb is user friendly with a shiny interface. However, a San Francisco woman recently rented out her apartment through Airbnb. She left her keys for her guests before going on a trip. The guests ransacked her apartment,stole her stuff and left a huge mess. It took the woman 14 hours to get through to an Airbnb employee. Maybe they were busy having an air guitar contest?