I use delicious to bookmark the articles, and put in a snippet of the article that helps me remember what it was about. With books, I use sticky colored tabs t

I use delicious to bookmark the articles, and put in a snippet of the article that helps me remember what it was about. With books, I use sticky colored tabs to call attention to important pages (instead of dogearing the pages) and a highlighter to mark up important paragraphs, with notes in the side if need be.