Originally Posted by JOKER

Consequences: Your site will get forced out of the German Google SERPS and you *might* have a surprise if you ever travel to Germany, but that option is rather unlikely.

2 Options:

1.: Ignore if you don't care about the google.de SERPS
2.: Show German visitors a "FSK16" compliant alternative site / tour. FSK16 = softcore maximum bare boobs.

If you give them your address all that'll happen is that you get the official version of that email via certified postal snail mail.