Now you can turn to these tools found on the Internet that will help you with tasks such as note-taking, bookmarking websites, highlighting important text during online research, creating mind maps, tracking time, keeping up with appointments, collaborating with others, managing projects, and much more.
Browser button add-on that eliminates superfluous items from YouTube (ads, comments). Just install in the browser bookmark toolbar, browse to the desired video, and click the Quietube button.
This youtube video explains the "deal" with Diigo and how it can be used. This is excellent for researchers and educators. (You could even use this for grading!)