I'm an admin mod at another site, which I don't usually specify in order to avoid even the appearance of "promoting" another board. However, I think it's useful to mention that the member-rating system there allows for "adding to" a poster's "reputation," or subtracting from it. Here, "membermarks" are somewhat useful as a guide to "who's tracking whom," but it's not dynamic--in other words, unless you're almost stalking a given nick, all you see is that day's number of marks, which means no way to gauge whether said rep is rising or falling...
Also, there's an option to NOT be rated--which I enabled...because we had a problem with organized pump n dump groups who used multiple aliases to run their scams, and I busted 'em, so they'd come back later and attack my rating.
Am simply offering some "brainstorm" ideas...