What happened to zestimates?Seems like they redid their formulas and changed estimates going back as well. Same home now shows different graphs. some of them don't make any sense with values jumping up and down beyond reason. Does anyone notice this. Does anyone know what they did?June 16 2011 - Ventura00YesReport 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.