I've seen this article pop up a few times over the past week and it's worth a quick read through. Basically, it suggests that the mentality of keeping all your important content "above the fold" is not particularly relevant anymore when considering web design as users have become accustomed to the idea of scrolling. I'm not sure I entirely agree as the design convention is as much about historical paper conventions as it is about showcasing your main focus. Regardless, it's a read worth considering.

Pretty sure I originally snagged this from Ronnie.