Re: article. The screencast (that's how that's called, right?) shows 'this visitor scrolls different' and claims that is how a mobile user scrolls. But that is also how a trackpad (laptop) user who skims through the content scrolls. Basically, its how one 'scans'. Scanning is useful to determine if content is interesting.
Anyway. Its also possible we are talking bots here. Is this possibly the effect of Ad Nauseam ?
Nevertheless, some proceeds in the latter sphere must eventually be realised from the former, by means however diffuse...