How do you let your prospects search for homes?

I have read about and followed many schools of thought regarding how you let buyers and prospects view homes, Give them un filtered access, only let them look at x number of homes before registering in the system, turn them off after a few days and on and on.

After years of experimenting i have gone with a website that allows easy sign up and then allows the potential client to get ongoing access and not turn them off, the system i use is a product called Homequest ( www.homequestgroup.com ) it is available in a number of cities, it is easy to use as a stand alone program / website or can be integrated into a existing site.

I recently had a prospect form over a year ago call me out of the blue to say they wanted to see houses and that they were ready to buy, we met, showed them 5 houses and trey bought the 4th they seen, they have been looking at my program daily since I set them up...