Instapaper. It puts a button into your bookmarks toolbar. When you find something you want to read, click the button. Later, you go to Instapaper where all those pages are saved for you. For bonus points, subscribe to your Instapaper RSS feed. Use a feed reader with good organizing tools that let you prioritize and highlight items. This, of course, is because you will quickly realize how few saved items you are actually interested in returning to.

I've tried many tricks (my favourite for a while was Google Notebook) and Instapaper is far and away the one that saves me the most time - and saves me from a lot of information I really don't need.