The number of Katrina evacuees counted at Houston's largest shelters is dropping dramatically as people leave for new accommodations, new jobs and new lives. Today 8,066 hurricane victims are still stranded at the three Reliant Park shelters and the downtown George R. Brown Convention Center, down from 25,400 reported just Tuesday. It's evident at a glance that evacuees have more breathing room than they did last weekend, but it's hard to track how many people are simply switching shelters, moving in with relatives or actually finding more permanent housing. After Reliant Park imposed a curfew for the first time last...