Just roll the scroll-wheel.
yeah.. about that..

A clear case of JJG right there.
Protip: Some of you guys just need to up your mousie game
(also known as baby ratt).
Protip for the ones scrolling a lot: Trackballs.
EDIT: And if you're also pointing and klicking tons of times, use them left handed for scrolling . or right handed if you're a left-hander.
You can also map your mouse scrollwheel to something else than scrolling windows.
I don't even know when it was implemented but I can single click my mouse wheel (Logitech) and then move the mouse up or down to scroll continuously through pages. The higher/lower you move the mouse, the faster it scrolls. Great for those long posts/articles - I set my scroll speed at my reading speed and I can sit back and sip my coffee while I read.