[support] Show link title instead of raw http:// link in post

How can I make a submit form(taxonomy or not) where the poster submits a URL and in the post it will be shown as a title of my choice. So for example if I want the link that is submitted to that form to be shown as "CNN ARTICLE" and the user submits http://cnn.com/article1 it will be shown in the post as CNN ARTICLE and not http://cnn.com/article1 as it's done right now if you add it as a taxonomy..