I gave to direct medical relief. Search and rescue teams, etc. are pretty corruption proof. Its true Haiti has a long history of poor governance but immediate assistance is a little different.
Also there will be a need shortly for basic law and order shortly as shock turns to desperation and starvation. Their government's command structure was largely destroyed. The presidential palace, the interior ministry, the UN mission that was largely running the country, all destroyed. I don't think emergency relief and establishment of basic rule of law in the coming days are things to second guess now. New governance structures for rebuilding on the long haul is a different story.