From Your Tube, Whose Dime?:
Startup of the moment YouTube, which garnered 12.9 million unique visitors in March, doesn’t care what viewers watch, as long as they keep tuning in. Making money is another matter: The site, which has raised $11.5 million in venture capital in the last year, didn’t see a penny in revenue until March, when they cautiously began selling ads. Meanwhile the site’s bandwidth costs, which increase every time a visitor clicks on a video, may be approaching $1 million a month — much of which goes to provider Limelight Networks.