The crackthe.net domain is not for sale. I've used this domain name since March 2010 as both my personal domain and originally for quite a few projects I was involved with.
Even though most of those projects have spun off into different domains of their own now (www.derivare.de / www.ftwr.io), I'm still pretty attached to crackthe.net as my personal domain.
If you have any questions, don't hesitate to get in touch:
crackthenet _at_ nym.hush.com