Why would someone with 1 question with 1 upvote be considered a “Top network User”?

I just noticed that on the Hot Questions page there's a widget for "Top Network Users".

I clicked on the very first user on the list (Ali on Blender.SE) to see who it was (I was kind of expecting Jon Skeet's alias or something)... and the user had exactly ONE answer, with ONE upvote (and reputation of 6) on the Blender site. They aren't a part of any other sites.

How can someone with those stats be possibly considered a "Top Network User"?

I realize that it may be somehow linked to the list of Hot Questions, but if the question's BEST answerer is at 1 upvote, that question shouldn't be on the Hot List (or the asker, if the question itself has only 1 upvote). And if that question has better answers, that user should not be incldued into Top Users list.

• Read it like: (top network) users, i.e. random users of the best network. Bit of a stretch, but works out. – Mat Dec 26 '14 at 15:21