i heard on npr that craigslist had a lot of help for katrina victims. i just checked out craigslist for new orleans and there were literally hundreds of offers for free housing in people's homes all over the u.s. for victims of katrina. however, i also heard that if people do take that option, there's no food for them, like there is in shelters. ugh! and since people from the hurricaine area can't get to their bank accounts yet and have probably lost their jobs and have no income, they are screwed in that respect.
if you can shelter pets that have lost their homes while their owners look for a new situation, craigslist has a list for that.