When I taught fourth grade, one of my favorite activities to do when teaching reading was to make use of sticky notes. (We are talking about the days when integrating technology was making use of the four to five desktop computers in the back of the classroom.) Whatever reading strategy we were using or story/text element we were discussing was marked in the students' books with sticky notes. If it was a copy of an article that was shared with the class, we would bust out the highlighters and write all over it to share our thinking. Now there's Diigo . Diigo has actually been around since 2006. So we are not talking about anything new. However, one thing that has greatly changed is the access to it. In the Chrome Web Store, there is a Diigo Web Collector that allows you to quickly launch the service. Users can then highlight and post sticky-notes on any website. What is also really incredible is the ability to share a link to a users annotated page so that others can view...