bit.ly bundles are collections of links you can add, remove and rearrange. Bundles can be easily shared with a bit.ly short link on your favorite sites like twitter and facebook.bit.ly shows previews of link content in a bundle, so you can see site content before clicking through to the source
via bit.ly bundles.
Creating a bundle allows you to share shortened, annotated links, with previews, with your friends or the world. Give your friends permission and they can add, edit, and annotate links in the bundle. And of course there are comments. All you need to do is login and start adding links. I created a bundle, http://bit.ly/dVNT45, and it looks pretty cool. In some ways it may be more interesting than Delicious as a place to save links.