Donating for Haiti
To help the people of Haiti, I recommend donating to Partners in Health that already have offices in Haiti and a long history of provision of aid, without preconditions and excessive bureaucracy. I have donated to them during the flooding that occurred in 2004 and they do great work. They have already provided two trucks of medical equipment into Port-au-Prince from their office in another town.
Of course, if you choose another aid organisation, that's still great.