Well if you're going to do the same KB I suppose there is little point. It was just my latest plan of attack, but there's no fooling you so it's back to the drawing board for me.

Have just realised that GUEST,Ed may have been talking about posting on the forum generally rather than the 85 billion thread specifically (Sorry Guest,Ed). I have therefore, single handedly (!), solved the mystery and claim the prize for being the first person to have solved a mystery on the 85 billion thread. I shall now work on my acceptance speech and make a badge.