Dalene and Peter Heck sold their home in 2009. Today, they are homeless by choice, spending their time and money traveling. To make it happen, they use websites and resources like Couchsurfing, Craiglist and the Caretakers Gazette to find places to stay in exotic locales. While there have always been stories of people taking off from home in search of adventure, the web has made a traveling lifestyle easier than ever. Young wanderers use laptops and smartphones to stay connected. Retirees take to the road under the aegis of the home free movement. Its enough to make anyone dream of