Symbaloo is a tool that I have been playing with for a couple of months now. Symbaloo is a different type of social bookmarking. The Symbaloo link here is to the educational site of Symbaloo. They call your page a "webmix". You can create webmixes and add other people's webmixes to your Symbaloo page.
To start, click on "Create free account". You can create tiles (websites), add tiles, delete, or move the tiles around on your screen. Symbaloo can be used as your home page and you can share your webmix with others.
Symbaloo is very easy to use. Once you create your account, edit your webmix, and start adding tiles. The tiles are just websites that you use on a regular basis. Here is one of my webmix links. Below is an image of another of my webmixes.
I like Symbaloo a lot because it is easy to use and very visual. Try it today!