Housevalues Part I: The consumer experience
This is a good collection of screen shots of Housevalues that shows you what they collect from consumers and what the consumer receives after the interaction.
http://www.marketingsherpa.com/housevalues/study.html
I'm working on a lead generation study as part of the "Building Your Brand on the Internet" course that includes the costs to the realtor and ROI for these kinds of lead generation programs. Email me if you are interested!
Jack