Where: CXO Media (IDG Corp.)
Why:As president-CEO since July 2005, Friedenberg oversees CIO, CIO.com, CIO Execu-tive Programs, CIO Executive Council, CSO and CSOonline.com. CXO Media has been partnering since April 2008 with LinkedIn, the leading online business network, with 27 million users. One example of the power of the relationship came when LinkedIn upgraded its groups functionality in August. The CIO group on LinkedIn shot up from 1,700 members to 4,940 in 30 days.