Judging from my own feed, I don't think it could be. I've been upvotes each and every post in my feed because there are so few to pick from.
Think I'll create a little data set containing some basic per user before and after traffic stats with basic account info for us to run analysis's on.
Need to check into that 85%, who they are and where they went and why.
Ceterum censeo HF20 esse delendam