[owlboy]

They see those hovers as attention. And they likely calculate how long you linger. The lingering tells them a lot when you are infinite scrolling on other platforms.

They would love to have full on eye tracking. So the next best thing is a cursor. (Even though I’d agreed with anyone who says it’s a poor signal.)

[macintux]

I’m suddenly grateful that I use my iPad, so they can’t use that signal on me.

[dns_snek]

They can see how long you stop scrolling, too.