Twitter makes Link Shortening easier

 Felt irritated with going to bit.ly or tinurl for shortening your Links to share on Twitter? Well no more! Twitter has introduced an automatic Link shortening recently. Now all you have to do is paster your link as such on the Tweet Box and Tweet it, the link will be shortened to 19 characters automatically.
 Twitter says on its blog
Sharing links on Twitter.com is now simple and instant. Plus, since we show a shortened version of the original link, people will know which site the link points to. This service also increases security. If users click links that are reported as malicious, we direct them to a page that warns them.

 Eventhough Twitter has announced this feature on their blog, it does not seem to be functional yet, atleast for me. I tried making a Tweet and it was tweeted as such, and when the link went of 140 characters I could not tweet. Neverthless, it'll be a useful feature for Tweeters once its fully functional. But how about bit.ly and tinyurl? Is it the end for them?