How do I flag my home?

I believe that your new "algorithm" is seriously flawed in determining the current value of our home. Because of it, the home just dropped 100K in a month or so... I know home prices hhave dropped but we just purchased this home a year ago and have seen it fall about $180K since then, while our neighbor's home price has remained failry steady and is the same sized lot, newer home but not that different in many ways. Our home was remodeled in about 2008 by the previous owners and we have added a substantial amount to remodel an outbuilding as well. How do I get you to take another look at your algorthim for our situation...we are out in a rural area and there are not a lot of comps... but the price we paid was a comp in and of itself... anyways, I believe there is something wrong here.