This domain is for use in anything where example.com doesn't work, although I wouldn't recommend actually using this anywhere since I don't know if I'll renew it every year. (I probably will, but don't assume I will!)
Please remember to purchase the domains you use in documentation so someone like me doesn't come and purchase them.
If you want to contact me you can email something to any name at this domain, there is a catch-all in place.