Jangl has always been about assigning a relationship it's own telephone number. They've recently extended this concept by allowing you to call anyone by simply knowing their email address. Now they're taking it a step further by integrating a PhoneBook into Facebook, which recently opened it's API to new applications.

By adding the PhoneBook application into Facebook, you can now easily create a telephone number-local to you-that you can use to contact any of your friends on Facebook. When you call that number, you leave them a message, which your contact listens to and will decide whether or not to connect with you. Your real phone number isn't provided at all in this process.

CEO Michael Cerda has greater ambitions: to bring voice to many other social networking applications. If there's any doubt, watch this 5 minute video where he discusses his plans.

From what I am hearing, these plans are already starting to come to fruition. I expect we'll see Jangl's technology embedded into several different communities before too long. Then you will be able to really reach out and touch someone, to borrow a phrase from an old AT&T commercial.

Do you want to see communication services baked into your social networks and online communities? Let us know what you think in the comments.