I like little wins. I was just looking through the CSS file for this site and noticed that - for some reason - I'd used 0px instead of a LOT of times. Most values need numbers (10em, 10px, 10% and 10pt are all very difference sizes) however 0 is one of the few valeus which is the same in all cases (0px, 0pt, 0% and 0 are all zero!). This adds up to wasted data and bandwidth; admitedly not a lot, but still Every Little Helps!
So I fired up Vim. Initially, I just did: