Acquisition alley: Barry Diller buys social networking company

Business Week reports that Interactive Corp has just bought Zero Degrees, a business and recruitment focused social networking site, Stuart Henshall wrote an appraisal of the site soon after they launched in December. Interestingly, one of the team member is Mark Jeffrey, developer of The Palace, one of the more innovative online communities of the early 90s.
Says Bizweek: “Diller appears to be institutionalizing InterActive’s experimental side. Tucked into the ZeroDegrees announcement is the news that he has formed a department called InterActive Development to incubate new ventures.”
I wonder how many companies in this space they looked at before settling on this one? And what acquisitions will be next.