Here are Jade's last few posts re missing reviews
Jade Aug 15: "Still looking into this, guys. Soliciting reviews is suspect behavior for our systems, so please please please make sure your reviews are legitimate and left by your customers of their own accord."
"The technical issues for reviews still exist -- those are more common in my experience with pages that have had duplicate or merging issues in the past. The majority of the reviews cases that I have investigated from the forum and other channels are reviews being taken down for suspicious reviewing behavior."
Today Joy asked: "Soliciting reviews is suspect behavior for our systems" - can you elaborate on this? Does this mean that Google now doesn't recommend businesses ask for reviews from their customers? I'm interpreting that it means that if they ask, there is a good likeliness that the reviews might get filtered. If that's the case, I don't really blame businesses for giving up and going elsewhere to collect reviews. At least with Yelp, the filtered reviews are listed below the non-filtered ones."
Jade replied: ""Soliciting reviews is suspect behavior for our systems.
What I mean by this is -- it's fine if you reach out to customers to ask them to review, but I do not recommend that you do this in waves. If you want to reach out to legit customers and ask them to review, I recommend you contact them immediately after you have done business with them.""
And later Jade said: "Well, think about it this way -- in our ideas, the "ideal" review is by a customer who writes a review of a place completely by his or her own accord, on mobile during the experience or at home after. This would mimic the regular flow of the business.
On the other hand, some SEO companies that resort to spam reviews to deliver "results" would exhibit different behavior.
It's a system that we are constantly trying to improve, but for now, this is what I can say to try and help. I really don't want legit businesses with legit reviews to get caught, so this is our effort. I can't provide specific numbers (and in fact don't know them)."