I stumbled on this
link today, for a VoIP service called stanaphone. They offer there software for Pocket PC versions of windows so I started thinking... Why not make software for the PSP that allows you to connect to a voip service? If you did have it, you could walk into a hotspot and *boof* get your voicemail, call someone back, or recieve FREE incoming calls using stanaphone as an examle. Just a dream really, but I think that could actually work
* Dont forget were talking about the future, so thered have to be a usb microphone at some point before that coul'd happen.