A recent Facebook "post" by voip pundit Jeff Pulver on "real time" social media got me thinking about what what be an extremely useful Facebook app- a Skype app that would set up either ad hoc or scheduled conference calls.
Skype already has a multiperson audio/video calling capability and a host of add ons to do things like whiteboarding, application sharing and many others. I know there is already a "Skype" application for Facebook but it is bordering on useless (which is close to the utility of most Facebook apps that I have seen but that is another discussion)