Peggy Magee would like to retire to northwest Las Vegas to be close to family. On a fluke, her son placed her $100,000 house on the popular online classifieds site Craigslist. In this tough market they didn't want a sell -- they wanted a swap. Generally, one of the parties needs to own their home, which Peggy Magee does. And in most cases, the other party would have to have substantial equity in their property. And that's hard to find in the valley.