rnk.me: The ultimate social bookmarking portal

The solution to shorten the internet URLs, keep up with it's accesses and your tweets popularity. With rnk.me, you can create your tweets, be aware of how many people are accessing your link and even know how many users liked it so much that retweet it on their own tweets. To get there, you just need to type the URL that you want to shorten, in the appropriate box, and publish the shortened address on your Twitter! It's as simple as it should be! 

No user and password authentication are required neither a service authentication within rnk.me and Twitter.