I'm writing about a firefox plug in that I think is very nice. Its called autopager.
Heres how it works. You come upon a web page that has page 1, page 2, etc etc like say a google search result. Autopager automatically tries to load the next page so as you read the page contents and scroll down you find that viola, the next page is already loaded waiting for your eyeballs. This is so convenient!
Not all web pages are supported. You can use the controls to make a profile of the webpage so that it is supported but it looks complex. I took the lazy way out and just waited for other people so submit the profiles to the autopager database.