None of them are accurate in today's market. That being said, Zillow has implemented quite a few changes and updates every two or three days, so they are better than Cyberhomes or eAppraisal. The most conservative numbers I see are from Wachovia's site (google wachovia and home values). If you take the lows of wachovia or zillow, you are closer to today's values if you had to sell today. Those two lows will give you what price if you had to sell today, but having to sell today is not necessarily equilibrium. I suspect that equilibrium will be closer to these two site's target when things finally settle down. That could be a year or two.