I just made a post on the PlusNet UserGroup forums and on reading it back to myself - I noticed something strange about my postcount.
Check this out :-
How cool is that? It took my slow self a little time to understand before James knocked some sense into me saying it must be 1337 5p34k. Indeed it is... I made another post and indeed 1337 became 1338 :-)
Investigating further, I've found that this is a little Gem that SMF have slipped into the code. Very clever indeed. Now - to reach 1337 posts on the Community Site Forums!