You probably didn’t know we operated a URL shortening service at easyURL.net, which has some nice features like being able to create your own short label for a shortened URL and tracking of access stats.
After awhile I noticed that I was also using it as a pseudo-bookmarking mechanism, but of course it required that I actually remember the shortened URL. So we went ahead and added bookmarking and tagging to easyURL.net.
The bookmarking features are accessible via OpenID tokens because we’re finding people are getting less and less interested in creating a new account on every site they use. For people without OpenID, you can always use a site like del.icio.us, for those with, use this.