Ah... I've been meaning to raise an interesting point about that - giftaid is not claimable on money raised by payments for goods or services, only straight donations. So no money raised via YDC or PF or any other charity auction held here should ever be marked for a claim of gift aid.
I merely pass on this information - what people choose to do with it is their business.
Actually, I think I'll take this out of the pimp thread and give it its own thread - sorry to hijack you, hope you enjoy the ride.