Agreed, zimmbobway is an idiot by my reckoning as well. But what about you Zurbiton?
You truly are obsessed. Perhaps you are blaming to much of your woes on the Zillow Algorithm.
As the Algorithm is just that, no one else is expecting 100% accurate valuations. There are ALWAYS particulars that get ignored by the relative value schemes that the mortgage and real estate industry use to appraise a home. For instance, you could live in one of the worst neighborhoods in Detroit, yet you've remodeled your home with marble counter tops and gold plated plumbing fixtures. The truth is, the banks don't care, the appraisers don't care, the tax man doesn't care, nobody but the person who comes in to look at your home and decides it's a "steal" for them, or horrifically over valued. In any case, it's only worth what the buyer believes its worth. By the virtue of the fact that you place SO much credence in the Z Estimate and it's impact on perception, you in effect have given Zillow the biggest compliment and endorsement that they could EVER have hoped for. In other words, if SO many people follow it, and use it as a resource, the business model if far and away a success.
Bring your message to the realtors multi listing service and make sure their valuation is accurate and then forget about Zillow. You, and others like you are using it incorrectly if you're expecting the "algorithm" to be infallible.