Social bookmarking is a great way to share intersting resources. This is such an organized way to keep track of all of the sites you find and can never find again. Bookmarks can be overwhelming - I know that I probably had 50 in my list and could not even remember what half of them were for.
This would be a great site to use to share resources among teachers and librarians. You can add a link to your blog, website or even Facebook as a way of sharing all sorts of resources. You can share educational resources with co-workers and extra currciulur resources with friends.
I have added a link to my Delicious account on my sidebar!