We've just launched our own official del.icio.us application for Facebook. It's super easy to use; just visit our setup page , and after a few clicks you'll be able add del.icio.us to your Facebook Profile page. The application lets you post a summary of your bookmarking activity to your Mini-Feed. It can also be configured to show your latest bookmarks so your friends can easily see what you've been reading. Give it a shot and let us know what you think.