Hi there. I’m going to borrow language from my friend Angi here. If you’re looking to help in the wake of the earthquake in Haiti, The Center for International Disaster Information makes it clear that monetary contributions to established relief agencies are the most useful response to disasters like this one. Financial contributions allow professional relief organizations to purchase exactly what is most urgently needed by disaster victims and to pay for the transportation necessary to distribute those supplies. The following organizations that have well-established modes of access and intervention to Haiti, and/or have physical bases in Haiti:
InterAction has a listing of many other organizations in need of donations, so please feel free to do your own research.
I currently work for the Peruvian branch of Partners In Health (PIH). Their projects are not based in Port-au-Prince and thus have, thankfully, not been severely affected. With approximately 100 physicians and 600+ nurses, PIH is now probably the biggest healthcare provider in Haiti. My family and I personally chose to donate to PIH.