Like many data scientists, s/he is not doing a good job, IMO, because they get too caught up in super-advanced tech while forgetting to cover the basics. Case in point: I've visited PornHub often, yet I have no idea how much a paid subscription costs, or what the benefits are (no ads? longer scenes? content that isn't available to non-subscribers?). I must create a free account before any pricing is revealed. I've never even done that -- don't know the benefit. OK, that's a marketing decision, not data science, you say. But if they are doing any of the fingerprinting you claim, then maybe on the 10th visit without registering, perhaps they can make things a bit more transparent? If not the 10th, the 100th? At some point, d.s. needs to implement some magic to get users like me to convert. At least to give a sales pitch. I don't hide, I use an incognito tab but no VPN. 99% of my visits originate from a Bing search, so that's a big hint to the d.s. team that I'm not loyal to the site, that they need to be more aggressive in selling me on PH vs their competitors. It also tells them exactly what I searched for, yet I haven't noticed that PH recommendations getting better as a result of that info. If you've got users visiting your site for years without so much as registering, at some point the data scientists and all the fancy tech needs to answer for that.