Twitter the biggest player of the micro blogging is going to use T.Co URL Shortening service for its mobile users. Yes this is true twitter is testing T.co the new shorten URL service for all the links shared on twitter. This is great concept when a user receives the message on their mobile box then they will see only shorten url but if a user check the same message on their twitter account on computer than they are able to see the entire URL. It is not cleared that top twitter applications will to adopt it or not.
I think it’s a great Idea to use t.co by twitter for making URLs more shorten to make is mobile user friendly