You may have noticed that all outgoing links have been shortened with cs90.c0. This is the new shortened domain I will be using. The system uses bit.ly with a custom domain. So instead of using bit.ly it uses cs90.co. What is a custom domain with bit.ly?
The Custom Short Domain is the domain that takes the place of “bit.ly” in a shortened URL (e.g., “http://bit.ly/bOm09G” would become “http://your-short-domain.com/bOm09G”). You must have full ownership and control of this domain, since you will need to make a DNS change to complete this step.
When is set this system up I was going to use yourls it is a awesome system but I was missing one thing that bit.ly has. A browser plugin, bit.ly has a chrome plugin that allows you create a short url for any page you are on just by clicking the button on the browser itself.
YOURLS is a small set of PHP scripts that will allow you to run your own URL shortening service (a la TinyURL). You can make it private or public, you can pick custom keyword URLs, it comes with its own API. You will love it.
There’s a WordPress plugin available for YOURLS, making integration with your blog a snap: create short URLs and tweet them automagically as you publish blog posts.