Free calls to Haiti + free roaming in Haiti from T-Mobile

In the aftermath of the earthquake in Haiti, T-Mobile offers free international long distance calls from current customers trying to connect with "loved ones in Haiti" through January 31. The free calls are retroactive to January 12, the date of the quake. Also, T-Mobile customers already in Haiti will be able to roam on T-Mobile’s partner networks in Haiti for free. In both cases, T-Mobile will remove these charges from customer bills accordingly.

Also of note, Google is offering free calling to Haiti though Google Voice for the next two weeks.