a post with a much less important point

I have a new pet peeve. Where did the word "yay" come from? I thought it was spelled "yea," but I appear to be the only one spelling it that way anymore. Now everyone spells "yay." Maybe to prevent confusing it with the word "yeah"? I suppose I should go with the flow and start using "yay." But I just want to go on record as making this move reluctantly.