Hi bro,
I use pinterest some: https://pinterest.com/muffincrumbs/online-casinos/
I followed you there. I am probably one of the very few affiliates that LOVES G+. Simply search for casinos on G+ and you will see CBR and Jared Bates. I bleed Google juice all over. Your serp bomb could be from anything really…but when G+ was young, I imagine it was a nightmare for links and could have easily been an algorithm thing.
Than again, I know my good bud Gambling Shares wont even use Google analytics for the reason you just stated 
“Too much info”
You online casinos and gambling affiliates are almost as paranoid as muffin. Lets all hold hands and share each others social networks so that we may find peace. A Zen affiliate is a productive affiliate. I don’t know about you, but I like making money, and these networks have ALL helped in someway, expect twitter lol.