carelpedre , a radio announcer based in Port-au-Prince, writes this morning:
There have been at least 30 aftershocks following the 7.0 earthquake  that hit Port-au-Prince yesterday, just before 5pm EST. Information is still hard to come by, but it is feared that many lives have been lost it what is the worst earthquake to hit Haiti in 200 years. The presidential palace , UN headquarters , not to mention an unknown number of shops and houses, have been seriously damaged or collapsed in the earthquake and its subsequent aftershocks.
As international media begin to arrive on the scene, several residents of Port-au-Prince continue to Tweet their eyewitness accounts . Dan Kennedy writes about the role of citizen media  in keeping Haiti connected to the world.
Photomorel , a professional photographer based in Haiti, posts devastating images of the quake (warning: graphic content).
The Haitian Diaspora have been mobilizing to support Haiti with its financial support and its prayers, and by exchanging information about missing family members. On Twitter, rapper Wyclef Jean  , currently en route to Haiti, is asking people to donate funds  to his Yele  organization. A network of Diaspora on Twitter and Facebook are spreading the word.
Many on Twitter have warned about donating to fraudulent organizations. reduceharm  writes:
Looking for Loved Ones
Most of Port-au-Prince is still without power, phone lines are down, and many have still not been able to reach their friends and family.
There are friends and co-workers that are missing. People whom no-one can account for. People we work with and love. There are more than I can name, but in particular we wait on one single friend who lived near the Hotel Montana – which has reportedly collapsed.
The horror has only just begun and I beg you to get on your knees – I truly mean ON YOUR KNEES and pray for the people of this country. The news might forget in a few days – but people will still be trapped alive and suffering. Pray. Pray. Pray. After that – PLEASE PRAY.