Albert just sent me a link to their new site which allows registered users to save bookmarks in folders and browse and search each other's sites. It reminds me a bit of OpenCola, but this is server based and is integrated with Google using the Google API. You need to register and it is still very early stage, but worth a look if you like new stuff. I suggested that they needed to work on buddy lists and grouping. They're working on some of this stuff this week.