I realize I posted this on the original Haiti thread, but here are some very credible charitable organizations whose donations go directly to relief. All have had people on the ground in Haiti for years:
ShelterBox - An organization that works closely with the Rotary Clubs of North America. They provide a box that contains a tent for 10 that can be subdivided, 10 sleeping bags, water, food, first aid supplies, coloring books and games for kids, as well as tools like axes, hammers, etc. Each box costs $1000. 100% of donations go directly to providing these shelter kits.
shelterbox.org
Doctors Without Borders - 100% goes to direct medical care. They've had people on the ground in Haiti for decades. All volunteers.
doctorswithoutborders.org
Yele.org - Founded by recording artist Wyclef John, they've provided thousands of scholarships, tons of food aid, and a plethora of other needed services in Haiti since 2005. 100% of donations go to direct relief. They have hundreds of people on the ground. You can donate $5 by texting "Haiti" to 501501, or visit their website:
http://www.yele.org/
Save The Children - 92% goes to direct disaster relief
http://SaveTheChildren.org