Toobla is a new social bookmarking service that provides you with an easy way to include visual clues in your bookmarks. You can include links, images, videos within your bookmarks. All of your bookmarks can be organized into folders which can then be shared publicly or privately. Toobla provides you with an embed code for sharing your folders of bookmarks on your blog or website. Adding content to your Toobla folders is a simple matter of clicking the Toobla bookmarklet (a simple drag and drop install) and specifying the folder you to which you want to add content. The video below provides a brief overview of Toobla’s features.

Applications for Education
Toobla could be a great way for students to create and share digital portfolios of their research and or their own digital creations.

Here are some related resources that may be of interest to you:
UberNote – A Great Replacement for Google Notebook
Zigtag – Semantic, Social Bookmarking