Zillow says my home is worth $1.5 million, but home sales in my area are $800,000 or less. Is Zillow overinflating the value and can I fix it?

If your Zestimate is off, it can sometimes hurt your ability to sell your home. Here's what you need to know about Zillow's estimates.
The Boston Globe

Is Zillow making the home buying problem worse?

Buying a home looks very different than it did 20 years ago. Instead of calling up a local real estate agent, typically everyone’s first step is to log onto Zillow to peruse real estate and check the ...