Zillow has dropped my home value $40K (7%) over one month?! WTF?I started tracking my home value on Zillow about 3 months ago and was seeing $500-$1000 ticks one way or the other a couple times per week, generally trending up. Now once per week for the last 4 weeks, they have dropped is $10K for no apparent reason. It seems to be some formula they are applying to my area since all of the nearby houses show a similar drop. But seriously 7% in one month? That can't be right.October 14 2009 - Malden00YesReport a ProblemProblemSelect oneOffensive contentIrrelevant contentSpam (pure self-promotion)OtherDetailsYour emailPlease enter a valid email address.Submit CancelContent flaggedWe will review this content. Thanks for helping make the site more useful to everyone. To learn more, read Zillow's Good Neighbor Policy.We're sorry. This service is temporarily unavailable. Please come back later and try again.