Delicious! Thought this was just a word to describe a triple chocolate dessert. But using this tool on the internet is equally sweet! It lets you search items tagged by others, search others lists, create your own tags and create your own list of sites to save to read later. I did several searches for libraries, 2.0, and collaboration. I found several interesting pages to bookmark. I started using tags after seeing others use them on their blogs and realized that as your blog grows this is a way to find older posts that you want to reread quickly. It is also a way to search other's blogs for useful information.