http://del.icio.us
Ever been on another PC and been lost without your bookmarks? I've been using
http://del.icio.us for the last few months and it is a very handy tool for simply being able to access your bookmarks from any machine but you can also see what other people are bookmarking and what is popular. For example, search for "bodyboarding" and you will find all bookmarks which have been tagged with "bodyboarding" with the most popular listed first. And you can try this with any keyword.
For those that do register or already use - please do us a favour and make sure you add sixty40 as a bookmark as it will help drive some traffic to the site.
Shot!