Here's some sites I've found that are handling aid for the Nashville floods:
1. Facebook site that is sponsoring a local fundraiser, also lists online resources:
http://www.facebook.com/event.php?eid=123717580975491&ref=mf
2. Middle Tennessee Red Cross:
http://www.middletennredcross.org
3. Nashville Red Cross:
http://nashvilleredcross.org
4. Nashville Flood Twitter feed with lots of great info and links:
http://twitter.com/NashvilleFlood
5. If you're on Twitter, the two hashtags you can find lots of info through are #NashvilleFlood and #Flood2010. Also, you can text "redcross" to 90999 to help.
That's it for now.