June 9, 2011 2:02 pm Twitter Heatmap Example Tried out OpenHeatMap’s Twitter visualization for our heat special. US & World Videos 0:27 FBI inspects American Airlines plane at PHL after bomb threat 1:40 Penn officials urging pro-Palestinian protesters to pack up and leave campus 2:17 Clear the Shelters: Meet Tails 0:38 Jury says Philly owes $16 million for wrongfully convicted man 0:30 Delaware drunk driver crashes into bus while fleeing state troopers, officials say