A recent craigslist ad screamed, “I want to TRADE UP.” The author of the post offered a five-bedroom home in an Atlanta suburb for a house worth $100,000 more in either the metro Atlanta area, North Florida or Las Vegas. Another listing, by an 84-year-old widow, offered to trade her three-bedroom home in Scottsdale, Ariz., for one in the San Francisco Bay Area, which was closer to her family.
