FaceFlow is a website that lets you have group video calling with up to four people. Just sign up for a free account, and then send the URL it creates for you to people you want to connect with. It’s that simple. No downloads required!
More than four people can be in the web conference, but extraneous attendees will have to use the chat window to communicate. You can also share YouTube videos within the chat window.
Check it out here: http://www.faceflow.com/.