Do you want to know if you should enter the social media space?
Ask your clients and prospects. Send out a postcard in a farm mailing. Are they Tweeting? Are they uploading pictures in Flickr? Have they ever commented on a blog? Have they created a review space on Yelp?
I suspect that your answers will be very different in Seattle and Mountain View, than answers in Torrance, CA or Malibu.
Chances are that if your peeps are anywhere they are on Facebook. And...drumroll please.....they are not actively searching for real estate. They are reconnecting with old friends.
Decide then and there if you are willing to engage them in that space. Do it wrong and it could be like trying to sell someone in the middle of a church service.