Going public about his giving has been a gradual about face for the 81-year-old Feeney, as my colleague Steven Bertoni writes in the October 8, 2012 issue of FORBES magazine.

FORBES: How To Stay Anonymous When You Give To Charity

The sad thing about this is, As Steven Aftergood of the Project on Government Secrecy writes, there has never been anything like an impenetrable wall between information deemed secret and the public.

FORBES: The Government's Not-Secret Secrets

Steven Baden, the executive director of Residential Energy Services Network, which writes guidelines for home energy audits, says most homes can reduce heating and cooling bills by 30% that way.

FORBES: Magazine Article