I don't think new posts should go straight to the top of trending either! what I'm suggesting is something closer to reddit's "hot" algorithm, which takes time as a parameter so new posts are simply more likely to show up somewhere on the first "hot" page.
It's ok by me.In fact, they could make the group has to have say a dozen people before they can upvote and maybe another dozen before the downvote is unlocked for the group. Or some groups could choose not to have a downvote.
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