Open source parasites?

A report:
Thousands of people donate their time and expertise to the benefit of all. But not everyone is giving as much as they're getting. Large companies, those with the greatest wherewithal to help, are surprisingly minor players in the roll-up-your-sleeves work of open source development.

Google reinvents TV ads with pay-per-click video

Google takes a shot at the video ads on webpages to complement Adsense.
"We are offering a very, very non-intrusive ad product," said Gokul Rajaram, product manager for Google AdSense, which runs advertising campaigns across affiliated Web sites. "Only users who click on the ad see the video."

Click to play video ads differ from the scattershot approach of broadcast TV advertising in that Google promises to measure the duration of how long customers, on average, watch any particular ad on a site before moving on to another page.