Well as I say, I can leave this site up for a time to allow anyone who wants to finish to do so.

Taking on board Tapir's suggestion, how about some special award, or recgonition of achievement for those who have reached a certain phase before the change.

I'm actually integrating a points system, and can provide bonuses in this way too.

a points system, thats awesome!

but how will that be used?

You'll just have to wait and see