By Alan Heavens Print Article RISMEDIA, March 19, 2011—(MCT)—More and more houses sit unoccupied these days, left behind by their owners in this still-tough economic climate. In 2010′s fourth quarter, the Census Bureau reports 12.1% of all U.S. residences, or 18,394,000 homes, were vacant. Record foreclosures are a big reason: After repossessing houses at sheriff’s […]