OpenPhone Project

I just had a brilliant idea, while sitting at school doing nothing.  I was thinking about TWiT and the cost of Skype (which should be free.)  I use Folding@home, and have modeled this after that.  F@H uses spare processor cycles and ‘net time, so I figured, why couldn’t a client that would be open in the background constantly, do the same?  SkypeOut is used rarely (I don’t use it) So a PC2PC phone would fit perfectly for most users.  It would have to be licensed under the GNU-GPL OR the CreativeCommons non-commercial usage license, be cross-platform, support any Mic/speaker combo that the OS supports and be easy to use.  Instead of having big servers to handle all the traffic, why can’t we do it like the GNUTELLA network does and use the desktop client as a distribution peer so that Bandwidth for the service is free and effectively making the project cost free!