A Diigo group was created for the class and the students were invited to the group. The first activity involved using the powerful Diigo toolbar to collectively highlight an articled shared/bookmarked by the teacher. Therefore, all students in the class were able to read and highlight the same article, keeping a record of their activity for later access. The screenshot below shows the web article with highlights.
The students then started their own research, adding individual bookmarks to be shared with the class. Together with the highlights, it is also possible to add "sticky notes". In the image below we can see the Diigo view of a student bookmark, indicating all the highlights ( at the top of each box) and the corresponding sticky note comment (showing next to the student name). The same highlights and sticky notes can be viewed at the bookmarked web article itself.
Students are also learning how to collectively create tags for their bookmarks. You can see below that two tags were used: Economy, Superstition. As the research database grows, they will have to be mindful of the tags already created by classmates and use those when necessary. This type of tagging is called folksonomy.
It will be exciting to follow the developments with Diigo!