I just reviewed “One Couch at a Time,” a movie about traveling and the sharing economy. Check out Couchsurfing was my gateway drug at Matador Travel Network. I went to a screening of the movie at the Hub in San Francisco, followed by a discussion of the sharing economy with the film maker Alexandra Liss, CouchSurfing.org’s Casey Fenton, and Yerdle.com’s Adam Werbach. Made me want to travel!