You can insert a Diigo tagroll into another site – like Moodle. I frequently include links for students to check out. But this will keep all the bookmarks together in once place, and make it easy for students to find sites based on topic/tag.
In Diigo, go to My Groups.
Group linkrolls/tagrolls
Group Tagrolls
Copy/Paste the Code
I have created a Group for my Spanish students. It is a work in progress.
Adventures with Technology 