Ok, so Shaun http://shaunsre.blogspot.com/
was talking about Zillow http://www.zillow.com/
and actually, its a neat site where you can get comps.
However, the comps on the properties I checked are completely off. The site told me that comps on one of my properties should be 360k which is an average of their estimated range. I know that I would not be able to sell it for more than 280k! Its way off..
They extrapolate older comps to get to today's values. The comps were ok, but the problem may be the appreciation factor.
Anyway, I wouldn't trust it for a second...