Twitter feeds ^[1] have been blasting away with dozens of updates every single minute. These were used by many of the networks to show streaming news on their news channels on TV. 

Twitter users were asking people to stop sending updates and there were rumours that the Government and/or the Military had asked the twitter channel #mumbai be shut down.

However there is no official record of this and Dina Mehta clarified this on twitter. She reports that the news channels have stopped carrying twitter feeds on their TV broadcasts.