DamienB
You're right. Posts do occasionally 'disappear' here. Moderators remove posts if people flout the rules. eg By trying to use PPRuNe to promote and/or advertise their own business ventures without paying our (very modest) advertising charges.
But, of course, you know all about that.
However, we don't remove posts just because they're silly so don't worry, your post above won't 'vanish'.
Heliport
Super Moderator