Twitter is no doubt the most popular micro-blogging site. There are hundreds of Twitter-related services available online (few reviewed here), but this time what I have found is going to be liked by all the Digg users who are on Twitter.
TwiggIt is an automated service that mashes up two of the most popular sites on the Internet, Digg and Twitter, and lets your friends on Twitter know what articles you Digg.
Digg is one of the most popular social-bookmarking services. There you discover and share content by submitting links and stories from anyhwere on the Internet and vote up or down the stories. Voting up is called digging, and voting down is called burying. The most dugg and popular stories get to the front page.
Such sites are usually blocked at work places like schools, offices etc. Here are a few alternate URLs that could be used to access Digg where it is blocked.