Maybe I am confused, but I thought that one way to share bookmarks among a group of people is to use a tag, but I can't see how to set up a "public tag" that is not owned by myself, that anyone can add to bookmarks to. I am aware of the lists and groups features, should I be using them instead? Maybe I am confused because I have used delicious before which does things differently...

I did try finding the answer via the documentation but was unsuccessful. Many of the tutorial videos under help are not loading by the way (pages are completely empty when loading from screencast.com I think)