Just drag and drop the 'Clip It!'button below into your bookmarks bar. Then browse the web like you always do. When you come across an article that needs summarizing, just press the bookmark button and a summary of the page will pop up!
Having trouble? Here's a link that goes over the process for Chrome and here's how to do it in Safari:
1. Make sure Bookmarks Bar is visible. Select "View" from main menu and select "Show Bookmarks Bar". 2. Drag the bookmarklet to the Bookmarks Bar.