Back in early December I wrote a review showcasing an order of custom made "Adderall" pills from a vendor that was relatively new to AlphaBay. The review was fairly well recieved and people were asking the vendor and I questions for days afterwards. At the time of the purchase, the vendor had less than 10 packs of that quantity sold. Fast forward a few months and I go back to make another order and see that he's sold almost 300 packs of the 30ct quantity alone. https://malzo.com/image/j1h
If you see a great vendor that you believe deserves recognition, a review can go along way.
I'm sure it influences traffic, which is why we should be skeptical of reviews from fresh accounts and without pictures. The no pic thing has got to stop.