Helping students research and take notes is often a difficult task. Awesome Highlighter can help with allowing them to highlight text and then save a SMALL link to that page. The short url can be saved, or emailed to self or research partners.
Best of all, there is a Bookmarklet or FireFix add-on, so once you install it, all you have to do is click on the AH on your browser page to start highlighting. Ah, how simple!