Thanks to Sandra Garramone for this next reminder. You've probably noticed the word READER in the address field of a Safari page. This came as Safari 5's ad-blocking feature. (Does it also come up in FireFox and other browsers?) Here's an article about it.
Sandra says, ". . . I have found reading some web pages easier when I pressed the 'Reader' button where the 'RSS' button is. The page that opens has no advertisements and the print is aligned across the page."
This is also handy if you're printing off an article, but note that the URL isn't automatically printed on those pages.