[grigory]

> It might be a requirement for non-techies but no-one surely clicks the back button or drags the scroll bar, at least no power user does.

IIRC, back button is one of the most used UI elements of a browser.

I'd probably consider myself a power user (I work on browsers for a living), and I use and most of the features you've described. Especially scrollbars, they're a great "read progress" indicator.

On a side note, we so often forget how small is the bubble of the so-called "power users".