The launch of Google+ is the beginning of a fundamental change on the web. A change that will tear down silos, empower users and create opportunities to take software and collaboration to new levels.
Social features will become pervasive, and fundamental to our interaction with networked services. Collaboration from within applications will be as natural to us as searching for answers on the web is today."
The hangout feature is useful, but just remember that their terms of service give them permanent right to reuse and alter anything you post to your page there.