Preferred way to contact me is using email - email@example.com.
To send me encrypted email, please use following PGP key:
63CB 1DF1 EF12 CF2A C0EE 5A32 9C27 B313 42B7 511D
For urgent stuff you might want to use jabber - firstname.lastname@example.org.
You can find me on FreeNode network as nijel.
Last possibility that (sometimes) works is snail mail:
Michal Čihař Zdiměřická 1439/8 149 00 - Praha 4 Czech Republic