National Sweeping - SMS Contests

AT&T
www.wireless.att.com/learn/messaging-internet/messaging/index.jsp

U.S. Cellular
www.uscc.com/uscellular/SilverStream/Pages/
x_page.html?p=mobmess_Menu_Features

Verizon
text.vzw.com/customer_site/jsp/
overview.jsp?lid=//global//messaging//text+messaging