Spurl
I've been using Spurl for a few weeks now. It's an online bookmark manager/community bookmark site. I know some people who use http://del.icio.us/ (Spurl can add your spurled bookmarks to del.icio.us if you want), but I like it more that del.icio.us because of the browser integration and some other features. If you've got a huge list of bookmarks you are trying to keep on multiple computers, it's worth checking out.
