Sqworl is an online bookmarking tool that saves a screen capture of each page you bookmark. To help you organize your bookmarks, you can create multiple groups of bookmarks in your Sqworl account. Should you choose to share your bookmarks you can share one or all of your bookmarks groups via the unique urls Sqworl assigns to each group.
I used it this summer for a training I did and it is an effective visual tool ;) Combine it with Livebinders & Symbaloo and you have a powerful set of tools to share resources in three easy to use formats.
A visual bookmarking site where you can make public bookmark pages with comments to share with students and colleagues by sharing the link. Great for setting homework.
http://ictmagic.wikispaces.com/ICT+&+Web+Tools