Actually, I have just been thinking about this, and there are several systems where you can rate people's reviews. You know on Amazon, the reader reviews? You can give a "Was this review helpful" yes or no vote. And I've seen it on film sites. And I've seen a few forums with an option to give a "Thanks" vote to people's posts. So it's not as complicated as it might look at first glance, and I could see some definite possibilities for it.

However... I can only currently see those possiblities as working as part of a larger "sub-community" type scheme. Which is not what we seem to be working towards here.

I'll keep mulling it over though.

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"you are terrifying
and strange and beautiful
something not everyone knows how to love." - Warsan Shire