I got this from the State Department. They're doing some genuinely innovative work using tech to connect Americans to people everywhere, calling it "21st century statement", and it's for real.
More on their blog, Dipnote: A Disaster in Haiti and How You Can Help
From friends doing overseas work:
Haiti needs our help. Give via phone – text "HAITI" to "90999" to give $10 directly to Red Cross for disaster relief.
I've just done it.