This has hit me hard too as my parents were missionaries there and lived there for a few years. I was grown already, so I didn't live there the whole time, but did spend a fair amount of time in Haiti. My heart is just breaking, those people just never seem to catch a break, the extreme poverty, the corrupt government, they just don't have a chance, and now this.
Another very reputable place to donate is through the Mennonite Disaster Relief...you can be assured your donation will reach it's intended recipients! You can go to mcc.org to donate.