Just another thought: Social bookmarking - another site

Have you heard of 2collab? It's a free service from Elsevier, and it's still a beta application.
It's designed to allow users to store and organise their favourites (eg blogs, websites, research articles) and share them with others as you choose. You can create and join groups.
More information is available at http://www.2collab.com. You can also watch or download a short video presented by one of the developers.
Update 21/11/08: Thing 11 for 2008 was social tagging and search. We had to search different sites (del.icio.us, Connotea, CiteULike, Murdoch catalogue subject search, UQ catalogue search, Google, zuula and KartOO), compare the results, and then blog about the sites.
Overall impression was that social tagging tells us how many different people view something - instead of getting just the author's and cataloguer's perspective as we do in a library catalogue. There are some imaginative sites available - KartOO displays search results visually and as you move your cursor over the image you see relationships between and among sites. Tagging (as in UQ's Encore interface) does liven up the image of a library catalogue! The downside is that being a librarian means I see all the differences (in eg spelling, capitalisation) and spelling mistakes (they are mistakes, aren't they?) - authority control has its place!