How I Use It
I used it throughout the year for structured in class lessons ("Folks, go to the Diigo Group for PACE. You'll see the links we'll be using today there.") and also for blended and flipped lessons. ("Folks, when you are home tonight, go to the clips I've linked on the Diigo. You got an email from Diigo today with the updated links.)
While not always seamless, I also enjoyed having group discussions around poetry, articles, and passages by using the Diigo annotation tools. Students could see what others had to say about the piece. (Sometimes this went a little wonky, but generally, it was effective.)
Diigo started out as an okay social bookmarking site and has grown into a dynamic, multi-layered research and management suite of tools and apps. My greatest frustration last year was when our district disable the extensions in Chrome, rendering it impossible for my students to fully use the features on Diigo.
I love the ability to create groups and lists, to subscribe students, to get into the student's account as an admin to help them with passwords etc., and to create classrooms as the teacher. Have a number of Chrome extensions is great as well.
It could be a better site were the interface simplified and the screens less text heavy. My students found it difficult to navigate at first, but grew increasingly more comfortable with using it. (AP Lit, heterogenous 10th graders in a self-directed project based learning pilot, and struggling ninth graders all used the tools effectively before being shut out. Even then, the list and groups still functioned.)
Little extra features I like include a "Read It Later" button that lets you do just that with an article, and the ability to tag each entry. Sometimes tagging can be a frustration as you create accidental tags. Easier means of editing lists -- perhaps more visually and less "check box" wise -- could be helpful. (A "drag the link you want to remove to this box")