I have found Diigo to be a very effective and useful online tool. Bouncing between two computers in my classroom as well as my home laptop I find Diigo a great way to bookmark information and be able to access the information from any computer being that it is web based rather than computer specific like traditional bookmarking.
I have added a variety of resources for my classroom including interactive whiteboard information and activities as well as a variety of web based activities for my classroom. I have also used the tagging feature to help organize and clarify the use of my bookmark. Check out and explore my Diigo Library!!