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Airbnb is a website that offers the opportunity for people to stay in other people's extra space and pay per night. Basically this is an alternative to staying in a hotel. You can stay in an entire apartment/house or in an extra room that's available. I think this is an AMAZING website/business and I can't wait to try it out sometime. 

The listings in the photos above are the "Top 40 Listings of Airbnb". As you can see, you can stay in some pretty unbelievable places that are so much more fun and interesting than a hotel room ever would be. DO NOT be discouraged by the prices for the Top 40 listings remember, they are the best listings on the entire site). There are plenty of affordable listings that you can find. Currently with rooms in 4860 cities in 141 countries, you really need to check out this site. All listings offer photos, maps, reviews, and lots of other info. Check out the Airbnb Blog to find out more about the company and how it all works.