Many years ago, I replied to a Local Radio rant about ATC. As I was an anony mouse, I did not thin it was a problem. Went into work 24 hrs later, all my buddies said "well done, etc" 45 mins later, my boss called my in, no tea, no bikkies.
He had a tape of my conversation supplied by GCHQ, but not the start of the discussion. I got a "ticking off"...[and when he left, the tape]...which I still have
