Here's a great technology that makes it simple to hold a live video conference.

http://ustream.tv

I had a few ideas about how you could use this to get more exposure including hosting a live telecast about market conditions, making a show out of local updates (read the new listings every morning if nothing else) and of course the best application I can think of for this would be to actually broadcast live from your open house.

Talk about adding value to your services in the eyes of your clients, and a great way to increase your personal branding.