I checked out diigo today,and see great potential for educational use. It was really easy to create a n account, but I got a little lost trying to find the application after downloading it. Once I found a page that I wanted to highlight, then I used the diigolet to add tags and save the page.

I would like to point out that viewing the you tube videos helped a great deal. I would recomend that first before you go to diigo and set up an account. By doing this, you have a better understanding of what social networking is, and how you can use it in the classroom. By going on this journey of 23 things I find such gold mines. You can really dive deep into social bookmarking. 

-N.