I recently set up a custom URL shortener using Bitly. The custom domain service used to be charged for, but is now free. The domain name I used was gh.cm which I paid for using some remaining balance at one of the domain registrars I use. It cost $99 for a year. I want to use it for URL shortening and as part of an image hosting service (for my own personal use and as a bit of a technical challenge). If you go to http://gh.cm you will see that it takes you to the bit.ly front page. This is unfortuante, but just the way it works. To counteract this a bit I have set www.gh.cm to go to my business profile web site.
It integrates with Tweetdeck and Twidroyd using the Bitly API key. Any links I make from the Bitly web site, via Tweetdeck or from the Google Chrome extension use gh.cm by default.
However, there are a few drawbacks to all of this that I have not found a solution to:
1. If I use the Twitter web interface it sometimes shortens my already shortened links.
2. There appears to be no way of letting anyone else use my custom shortener without giving them my bitly API key (although making a link with bitly and then replacing bit.ly with gh.cm works).
3. There is no way to use Bitly with the Twitter web site interface (although you can use Cotweet as an alternative).
I might consider setting up my own shortening script on my own server, but this would lead to further integration difficulties.
The set up itself was very simple. Once the domain was registered I logged into my Bitly account, went to the link shortening box and where it says "shorten with:" I selected custom domain. This took me to a page woth the instructions. I used this to make the necessary changes to the DNS settings on my domain registrars name servers. Once the new version of the zone file had propagated it all started working.
The advantage of having my own shortener is that it gives the impression that I know what I am doing on the internet (which I obviously do having founded and run a successful - and profitable - web hosting company). Its a reminder to people that I still have those skills and its useful marketing. Its also quite nice that "gh.cm" is reminiscent of my professional profile web site address gordonhudson.com.
Feedburner does not support the use of Bitly so I have left my email subscription service on Feedburner and moved my automatic tweeting of new posts to dlvr.it. This was a simple case of entering my feedburner feed address and my Bitly API key. This defaults to my custom domain and it is working correctly.
I have also installed the Bitly browser extension for Chrome so I can tweet links directly from the browser.