An assistant professor at the Harvard Business School and prominent anti-spyware advocate is calling on Google to sever ties with advertising partner InfoSpace, due to problems with pop-up pay-per-click ads.

"According to Ben Edelman... Google is charging advertisers for what he described as 'conversion-inflation' traffic from the WhenU spyware program," writes ZDNet's Ryan Naraine.

"Edelman's expose includes several screenshots, video, and packet log to show that WhenU continues to cover Web sites with PPC popups," Naraine writes. "Crucially, those popups show Google ads -- often promoting the very same sites users are already browsing."

Click here to read the ZDNet story.