Don't have graphs or something similar, but it's obvious anyway. 2 days ago we banned a faking views site with 10000 uniques daily that had 0-1 clicks per day. The problem is that until we notice that he already takes his 20% of our total pool revenue for 1 or two days, withdraws immediately and all other legit sites suffer with lowered revenue which we can't return or recalculate. Now we don't even need to chase and ban such sites, they can keep faking but will automatically win nothing from us. This method will also encourage placing our banner well visible, not just putting it somewhere to count views.
Yeah, I like the change a lot, was mostly looking for like a "case study." This is something that I haven't had to deal with myself (but most networks I use are invite-only and only target high-quality sites so that's likely a big reason).