if the admins really just want to highlight for new users the posters they think new users would be interested in, then the admins should just decide who goes on the top posters list. And if it's a popuarity contest with them, fine, they own the place, they have an incentive to put the good posters there and leave off the bad ones.
So my vote is drop it entirely, and have the admins put up a "recommended list of posters" list for newbies to see who best represents what the owners want the site to reflect.
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Funny thing, but it seems that the harder I work, the luckier I get.