"I created a database of 33,000 of the 39,000 stories that made Digg's homepage in 2007 and, using Yahoo!'s API, I tracked how many external links each URL had pointing to it."
"Engagement is defined as clicking on the ad, or hovering over it for a second or two. Once the Flash overlay is triggered, the advertiser pays a fee of $.50 - $1."
"Google Inc. and nonprofit academic medical center Cleveland Clinic formed a partnership and pilot program aimed at giving patients more control over their online medical records."