Michael Robertson, CEO of SIPphone (a competitor to Skype) in a recent interview with Engadget.com explains how the free VoIP application uses Google Maps:
"With the free conference call service, you can have multiple hosts call in and record a podcast. There’s a great eye candy piece called Map It, and it will show in Google Maps a location of who you’re talking to. So if you’re not sure who you’re talking to or if they are who they say they are, you can click that and find out."
(Read the entire interview..)