Facebook: Denies providing direct access to the government.
Google: Denies a government back door.
Apple: Denies any knowledge of PRISM.
PalTalk: Denies ever hearing of PRISM.
Microsoft: Denies, with exception to binding government orders or supoenas.
Yahoo: Denies providing direct access to servers, systems, or network.
AOL: Denies knowlege of the PRISM program.
We'll update with more as they appear.
Still awaiting responses from Skype and others. Will add as they become available.