Tagging can be used in many ways. Just like Diigo, we tag things to make finding lots of material easier. As a teacher, finding loads of material in a snap is just what we need! Tagging is a great way to do that! Delicious.com is a great site for finding sites that have been tagged. I typed in multiple intelligences and found many great sites that I would use in my classroom or for academic projects. It was so easy and it gave me sources that I wouldn't come up in a Google search. Social bookmarking sites can be used in a classroom but mainly for teachers. I see myself using this site to find current sites and information in my own classroom.