168 Pakistan Children Killed by U.S. Drone Strikes over the Last Seven Years

This count as of August 2011

"Just one in 50 victims of America’s deadly drone strikes in Pakistan are terrorists – while the rest are innocent civilians, a new report claimed today.
And the authors lay much of the blame on the use of the ‘double-tap’ strike where a drone fires one missile – and then a second as rescuers try to drag victims from the rubble
 Investigators also discovered that communities living in fear of the drones were suffering severe stress and related illnesses. Many parents had taken their children out of school because they were so afraid of a missile-strike.

Every reported U.S. drone strike from 2002-2012
"I've been tweeting for 12 hours and we're only at March 2010."