Save all your bookmarks online so you can access them from any computer wherever you are.
Bookmarks can be tagged for easy later retrieval.
See 7 Things You Should Know About Social Bookmarking from Educause.
Note that you can search these useful documents, there is a whole series of ‘7 Things you Should Know About …’ on Learning Technology.
Diigo allows teachers to set up free Educator accounts so student accounts can be created for an entire class including any students under 13 (email addresses are not required for student accounts set up in this way).
Diigo also includes the facility to easily create lists of websites which can be shared with anyone whether or not they have a Diigo account and research tools which make it possible to annotate web pages by highlighting and adding sticky notes. Student Learning with Diigo offers much information including video training.
Another very popular bookmarking site is Delicious. The future now looks assured for Delicious as it has been acquired by the founders of YouTube, Chad Hurley and Steve Chen.
Learn more about Delicious.
Note that it is possible to automatically send Diigo bookmarks to Delicious! (See Save to Delicious on the Diigo tools menu.)
It is also possible to use Evernote for bookmarking favourite sites; if like me you think it is never possible to be too backed up you could use ifttt to automatically send your Diigo bookmarks to Evernote!