When I find legitimate sites to donate to I'll post them here. Keep those in the path of the tornadoes in your thoughts as from Tuscaloosa to Ringgold, GA (and further) people are in a bad way.
Mid Alabama Red Cross
This is a shot of the big one running through Tuscaloosa. For those that know the area well (like me) know that 15th street and McFarland took a direct hit. Many of the stores are gone (Taco Casa, Krispy Kreme, Taco Bell, etc). A very sad day.