I add several bookmark that I'm interested or frequent use into my library.We can also share our resources by Twitter, Facebook or email.
If you are interested in mine bookmark. Please check the link Sarah's Bookmark.
There are some feature functions of this tool. 1)Highlight content on website
2)Research Tool 3)Communication and Sharing. The feature I like most is the communication and sharing function. I can share all my web-resources with family, friend, and students. In my opinion, I think it belongs to ISTE NETS T. I think it is a technology tool rather than leadership tool.