Are you always posting links to interesting stuff on your Twitter account? If so, you might be interested in a site called Packrati.us. It basically follows your Twitter feed and automatically saves any link posted to your Delicious account. Could be useful for some people out there.
I found another similar thing.. This helps in making social networking easier.. It’s called Yoono.. You can access all your social networking accounts from just one place.. It’s really cool.. Check it out here : http://www.stumbleupon.com/reset_password/confirm/b49bd407365c601ffbe1e2cb40697b70/