Los Angeles-based Demand Media, the online media venture of Richard Rosenblatt, announced Monday afternoon that it has hired on Joanne Bradford, most recently Yahoo's SVP of U.S. Revenue and Market Development, as its Chief Revenue Officer. According to Demand, Bradford will oversee brand advertisers on the firm's top 20 owned and operated web sites. Bradford reports to Rosenblatt. Bradford had also served at Spot Runner and Microsoft.