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The problem is, unless you give everyone the ability to moderate all the time, not everyone will HAVE mod points - and as a result, only some students will get the ability to moderate, which is highly unfair if grades depend on these marks.
Conversely, giving everyone the ability to moderate cheapens the value of a mod point, and in some cases, still won't solve the problem - once a comment is as highly rated as possible, it can't be moderated up further - only down.
Additionally, if someone is moderated down enough, the lose the ability to post - denying that student the chance at further participation, which again would be bad, particularly if grades are a factor.
So, while I think this is an interesting idea, I'm unsure how it would work in implementation. You could change the default comment values, but that doesn't actually solve the problem, it only reduces it's frequency. You might also be able to prevent the default ban from being moded down, but I'm unsure how, other than making all the students admins, and that could be done if you kept their security level low enough.
Lastly, if you give them admin access (even at a low level) they will be able to see who moderated what, and how, potentially leading to retaliatory modstorms...
If you do go with slash, please let us know how you solved or addressed these potential problems.
This means that one can trust the moderation to some extent and even give students marks based on how well their comments have been received by their peers.
However, it is of course a problem that some students may not have mod points. And losing the ability to post is a serious problem.
We have actually had major problems getting slash running at all (so I can't comment/play with your proposed solutions
If you like postnuke, and want to see the project that most of it's tallent left PN to go work on, check out Xaraya [xaraya.com].
The whole point after all is to stimulate discussion and help comp3141 students prepare for lecture. Whether or not some of this discussion is done by non-comp3141 students is beside the point. The goal is to present the best discussion possible on an upcoming lecture.
I'm not sure whether this would have any implications with respect to the moderation. It may be ok
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