GitHub User: joonas
They are open source, so you can just patch them and submit a pull request :)
Ryan mentioned in the screencast that it used to be a paid service, but since thoughtbot decided to shut it down, they have open sourced it for everyone to use, hence this episode.
So you can still use it, as shown by Ryan, you just have to host it yourself (for better or worse).
I would recommend reading the post over at the thoughtbot blog as well.
As a side note, if copycopter isn't enough for you, Locale is also worth checking out.