San Francisco—ZDNet on Tuesday unveiled a major redesign that includes a new blog network. The revamped site (www.zdnet.com) features product news and vendor information alongside insight and commentary from technology experts and bloggers. The presentation is designed to help technology buyers sort through all the information available online. The redesign will also include the upcoming launch of “David Berlind’s Testbed,” which will discuss the latest product developments that affect business users. “Testbed,” as well as multiple blogs on topics such as mobile, security, Web-based applications and hardware, will anchor expanded new-product coverage. ZDNet is a property of CNET Networks.