There are many of these “insert your very-long-link here, and you will get a nice and short one in return”-webpages and the are all more or less the same.
I’m at the moment fiddeling with a Wordpress extension for one of these, which gives the option to automatically output a short-url to every single page, blog entry and so on, in Wordpress.
The extention will be released very soon – it just needs some final testing. I have however inserted my test-extension on this page, so there should be a “share on twitter”-feature somewhere on the page.
read on