I haven't found an exact quote, but Bob Geldof has been reported as saying that "three billion" people were watching the telecasts of the Live 8 concerts.

Which begs the question: If global poverty is such a big problem, then how come half of the world's population has access to a television set?

If you care, here's the home page of BBC's coverage of the concerts. Better still, keep an eye on the Make Poverty History website, which includes live links to the Indymedia audio coverage of protests in Edinburgh.