Packrati.us - Bookmark your Twitter links
This site provides a simple bookmarking service. We follow your twitter feed, and whenever a status you tweet or re-tweet contains URLs, we add them to your favorite bookmarking service: Delicious, Pinboard, Diigo, historious, Instapaper, Pocket (Read It Later), or your own Scuttle server. Optionally, bookmark URLs in @replies to you, and in tweets you mark as Favorites.
Let the packrat keep track of the URLs you share. You don't want to post them in multiple places. Just tweet the URLs that interest you, and Ratius T. Packrat will bookmark them for you. He'll use any hashtags you include as tags for your bookmark and include the full text of the tweet in the bookmark comments.