Kyle MacDonald harnessed the power of the Internet to trade a red paper clip for something better, over and over again. Since last July, he’s managed to turn a red paper clip into a year’s free rent on a house in the desert, the Associated Press reports. "It's totally overwhelming; I'm not going to lie," he said by phone from Montreal, where he and his girlfriend, Dominique Dupuis, live with two roommates. "But I'm still trading for that house. It's this obsessive thing." MacDonald’s obsession started with an ad he placed in the Craigslist.org barter section, saying he wanted something...