Apple launched Safari 5, baked with Reader —among other things, which is their take on 'bookmarklet like' functionality to take the article you are reading and make it easier to read, except it doesn't, since it justifies the text (thanks derek).
So I've whipped up a simple user script that overrides the rule. To load this in Safari 5 you'll need GreaseKit. Grab it here.
Keep calm and carry on [reading].