To avoid spam, I have intentionally obfuscated my email address using various techniques, you can pick whichever of the following methods you would rather use to reverse the obfuscation.
This one is easy, run the following command in a Unix shell, and my email address will be magically revealed.
echo 'th4tjhq2bn' | tr 'a-z42' 'h-mu-zn-ta-g@.'
A simple Caesar Cipher, but with a modified "alphabet" to add characters required for my email address.
Plain: abcdefghijklmnopqrstuvwxyz-_.@ Key: 18 (left shift) Ciphertext: mdlmfd@ku-