I encourage everybody to use encrypted mail whenever possible. If you happen to be in Germany, Rhein-Main region, just ask for key signing.
My policy for signing keys is as follows:
You'll find my public key for Gnu Privacy Guard on the key servers and here. The key data is:
pub 1024D/77D4FC9B 2000-08-12 Jochen Hein (28 Jun 1967, Kassel, Germany) <firstname.lastname@example.org> Schl.-Fingerabdruck = F5C5 1C20 1DFC DEC3 3107 54A4 2332 ADFC 77D4 FC9B