Following the earthquake in Haiti, a plane carrying physicians flown in by Doctors Without Borders was unable to get clearance to land in the country’s airport.

Seeing a Tweet by one of the charity’s organisers NBC journalist and Today anchor Ann Curry used the same medium, tweeting a message to the US Air Force to ask them to allow the flight to land.

Her post was named one of the top ten most powerful Tweets of the year by Twitter this week, number one in the list shown here.

Hat tip: lostremote.com