While reading phoneboy's blog, a news item glittered on the screen: PhoneGnome released its Partner Application Integration API, confirming that the road to interoperable voice applications is paved with good tools.
It is more and more true that the "Telephony network" is going to be a VoIP mashup in the future. And this future is nearer than expected, as VoIP communities peer and interconnect.
What I see in the crystal ball: wi-max, geolocation, web maps, windows mobile, presence based advertisements.
If you want to know more about presence, take a look at this blog: The presence of Presence