Revolving Door Erik Sorenson Upped to Chairman of Vault.com By Chris Ariens on Dec. 9, 2009 - 10:04 AM Former MSNBC president Erik Sorenson has been upped to chairman of the board of Vault.com, ceding the CEO title to Claude Sheer, former interim CEO at Beliefnet.com. WebNewser has the memo Sorenson sent to his staff.