It's not a big problem, but one that caught me today - when looking at a page on the web, our indication of it's length is the size of the scroll bar slug in our browser window (if it's small, the page is long). I followed a link to this page: QuickSilver - A Better OS X In Just 10 Minutes. 10 minutes I think... okay, I can spare that, at which point I look at the scroll bar; the tiny scroll bar slug tells me there's about half an hour of reading to be had on this page!