If you are interested in Haiti support, but don't know who to give to or who you can trust (sad, huh?), we'd recommend Bahamas Methodist Habitat. This is who we do our mission trips with and where we will be this May. (It's like a Habitat for Humanity) They are always great to help around neighboring islands during disaster with flying in supplies and helping evacuate people.
Visit their site if you're interested and check out what they're doing!