Voice Over IP (VOIP)
From Wiki
[edit] VOIP Services and Tools
Google GrandCentral - Make free phone calls through Google Talk.
MyVox - Turn your phone into a computer-based microphone.
PalTalk Express - A VOIP application that supports webcams.
TokBox - An Adobe AIR=powered application that can be used on Facebook.
[edit] Voice Mail
GotVoice - Store your old voice messages as MP3 files.
