Announcing the ANZAC Day Charity Drive

Foksuh, on Apr 27 2012 - 22:16, said: Out of curiosity, didn't it says "all gold purchases" before? I just checked and the wording is "A 10% bonus will be added to most gold purchases.".
Was it changed? If it was, what's the difference between all and most?
Also, I'd rather see charity donations apply to all gold purchases in future, that'd be nice.