opinionate:
The resulting categorized waymark recognizes the user who originally contributed the proto-waymark with a credit on the page.
I just helped to categorize an uncategorized waymark (WM7M4D) and now
I'm the one who gets the credit for the waymark... in other words, I'm
the new owner! WHAT? The original poster does get "credit" on the
page, but is not the owner... I'm not so sure I like this...