Ah, gotcha! Thanks for the explanation. It still might be a worthwhile change that a user appear only once on this list. It is styled "Top Daily Actifitters" rather than top daily posts.
Also the word daily becomes imprecise when used this way. Though it's certainly a plausible expression in light of what you've explained. I don't think it's what comes immediately to mind.
It's not too big a deal though. I do think it's just likely to keep things more clear. It also broadens the opportunity for individuals to appear on the list which, I'm guessing, serves the purposes of having a leader board a little better.
All up to you. Thanks for replying!