"You know you're a fan of [spooks] when....." (Take 2)

[TygerBright]

variation:
you know you're (dead chuffed to be) a Spooks fan when...
you find out that there is something called "steganography" (it's even the same word in German) which differs from "stenography" (something I learned, practised, and forgot again long, long ago).
I knew the 'art/science' of hiding information in pictures/script existed but I never had a word to attach to it... Thanks Nitrus for the edumacation!!!