Another article from Scott Berkun pointed me to a wonderful tool: Readability. Imagine being able to read web pages in decently-sized font on pleasant background and without all the navigational and ad clutter. It makes my reading experience infinitely more pleasurable; now I can manage to read blog posts that are several pages long without getting a headache.
Safari 5 has a similar functionality already built in: a Reader button appears next to the URL and once you click it, you get the main text of the web page in a pop-up frame. It works a bit better than Readability (which sometimes positions the text annoyingly close to the left side of the browser window), but is (contrary to Readability) not easily configurable; Steve knows best what you need. Fortunately, there’s almost always a workaround.