Furl was recently recommended to me. It's a site that lets you keep your net bookmarks online but more than that, it will keep copies of the pages for you if you want so even if the original site disappears you'll still have the info. It also lets you share your bookmarks in various ways. Here's mine so far. I'm not sure if anyone will find them useful but I find it useful to be able to bookmark something at work and then reference it at home and visa versa.
It also lets you present your bookmarks as blog entries if you want, giving a comment to each one and allowing others to comment as well.
It's even got importing and exporting to and from IE and Mozilla.
I'm not sure what the original intent was, blog tool, bookmark tool or what but either way it's pretty cool.