Diigo might not be as visually appealing as bookmarking sites like Pinterest, but in a lot of ways it is still an outstanding tool. One of the best features of Diigo, Diigo Groups, just got a couple of updates. First, you can now play YouTube and Vimeo videos directly within a group without opening a new tab or window. Second, you can now export the content (bookmarks) of a Diigo Group as a CSV or Excel file.
Applications for Education
If you're already using Diigo Groups to share resources with your students, you will probably enjoy the option for students to watch videos within a Diigo Group. You could have students use Diigo Groups to collaboratively create video playlists on topics that you're studying in class.