Beyond that, though, I don't know why anyone cares. Half the questions on Zillow seem to be about owners disagreeing with the zestimates. So? Realtors don't use Zillow to determine values. And Realtors will tell their clients that those numbers aren't reliable. And, frankly, if you're selling a property and some buyer rejects it because the zestimate is low, then you may be dealing with someone you'd rather avoid.
Hope that helps.
Unless you have nothing else to worry about, I'd recommend not trying to navigate the Zillow and Zestimate world. There aren't many realty professionals that I know of that worry very much about Zillow. All Zillow is about is a general outline of property values based on data...right or wrong. It would be very tough to give a proper estimate of value by simply using a computer generated data system without utilizing the skills of an experienced real estate broker or an appraiser.
There's a reason the standards of licensing an appraiser (who values realty) are very high. Estimating values of homes isn't a one step no look process.
Any buyers or sellers I work with get the same lecture of NOT relying upon Zillow to make any type of decision.
That is a very good question as Zillow's estimates are not correct. Trulia has a better handle as it feeds from public redonds/MLS. Zillow moreso depends on the agents toupdate the data.
BTW, if you are NOT signed in, you'll still see the "Edit" tab but won't have the correction options.