Help me understand the REAL deal about SMM Panels

So I have been involved in online advertising to clients across the globe for almost 20 years off and on. My most recent retu was about 6 weeks ago hoping to build a viable business again but it was after about large break. When I left; interstitial ads, keyword traffic,desktop ads were the hot items with mobile and social on the horizon. I come back to SMM and organic and API driven options. In research I see many options with SMM Panels to obtain deep discount prices almost lower than...

Help me understand the REAL deal about SMM Panels