Okay, the name is funny, but it works great.  There is no cost for a personal account and you can invite up to 10 people in one session.

Yugma is ideal for any size business that is looking to work with remote teams or contractors, provide remote technical support to customers or employees, conduct virtual training, host webinars, provide remote services, or just about anything else you can dream up.

You can check them out at Yugma.com

Thanks Peter for sharing this great find!