OKAY--here we go--based on the principle of the blogosphere:
Everyone on this board has their own particular posters who they trust (and probably have membermarked).
Why not have a separate "trustmark" system. If any poster that I have "trustmarked" recommends a post, that recommendation will show up for me when I peruse the message list!
Example: I trustmark xanadu. If xanadu decides to recommend a particular post, I see that recommendation!
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Indeed, I like this idea so much, I'm PMing Matt with it!