Are Zillow like websites break or make deals for Investors?

[Vijaianand Thirunageswaram]

There are so many websites like Zillow, Trulia, Redfin which gets fed from MLS. They are sharing first hand information to consumers on the market plus investors like us. Many consumers and new investors assume they are best resource and trusty one and try to negotiate on deals or make offers.

But many of us know they are just merely another resource to get information to start the research and analysis process and should be considered with grain of salt. They are not the true source and especially ZEstimate is not to be considered as Sales Comp which many do. At times that number is way high or way low it all depends and really screws up analysis.  

I usually use Zestimate to just decided whether to even start analysis the deal. That's about it. 

What do you all think?