Although it was a bit difficult at first, once I got the hang of Diigo, I definitely see myself using it in the future. I couldn't figure out the inline sticky note, but did the highlighting and the floating sticky note and found it very user-friendly. I can see myself using this for my own personal use and for the classroom. I could have really used this in grad school. I do wish you could more easily use database articles with this, but I can still see using it for other articles online.
I was confused with posting to the 17 Things page, but realized I needed to wait to be accepted into the group before I could have access. That might be the story of my life: waiting for acceptance. Huh.