I think Karma is a good thing, for example in the Stanley section we have had a few silly young men trying to spoil it
But when lots of us bad karma the individual his karma figure is so low, that every post he makes, people will take with a pinch of salt what he says due to his obviously silly history.
On the other foot, a higher karma figure shows that that persons post SHOULD be trustworthy/honest due to a goodish history ...