The Red Cross has tied with a mobile payments solutions provider: Now you can send a $10 donation by texting ‘Haiti’ to 90999
The Red Cross Twitter account is http://twitter.com/RedCross/
The New York Times' Haiti list on Twitter http://twitter.com/nytimes/haiti-earthquake
You can view satellite images of the earthquake in Haiti using Google
On a related note, you might like reading this article: "Why is Haiti so poor?"
Tyler Cowen lists out 10 reasons. This is what I found to be somewhat credible.
Haiti was doing OK until the Duvaliers destroyed civil society, thus putting the country on a path toward destruction. It is a more or less random one-time event which wrecked the place.