Jaxtr lets you make phone to phone VoIP calls

Here's how it works. When someone views your Jaxtr profile, they can click a "Call Me" button. Jaxtr will then bring up a local phone number they can call. So if you're in the US and the person who wants to call you is in China, they'll get a Chinese phone number. Jaxtr makes the connection over the internet, but once you've got a number, you can use it any time you like. No computer necessary.
You can call other Jaxtr users for free, or purchase credits (called "Jax") which you can use to make cheap long distance calls.
[via VentureBeat]
