The scoop on Zillow's Zestimates

Yesterday, I came across this article (http://www.tricities.com/news/local/article_f29c44c2-aafb-11e4-bc5d-872c21f4121a.html?mode=jqm), which highlights how the Zillow's Zestimates can be "off the mark". 

Having invested in the USA market for some time now, I agree with this article and would like to remind new investors that in order to find the "true" value for their property, input from an experienced realtor or an investor is vital. 

Zillow provides a very important service to all the investors and I do agree with its CEO, Mr. Spencer Rascoff, that Zillow Zestimates do provide a very good starting point. However, critical input from an experienced realtor / investor can help you avoid some costly mistakes.