kwyjibo , as far as the Wincustomize site admins are concerned there are only two types of members....those who abide by the site's rules of conduct and those who do not, and the latter are shown the door....in a timely fashion.
The new 'Karma' system has no bearing on that.
What it can represent, however is a public community's reflection on the 'worth' of their input....aka positive, helpful advice, etc. If, at some future time it's deemed to warrant some form of reward for 'services rendered' then it's much akin to the User Levels already in place.
At this stage it's a 'fun feature' [that Zubaz seems to be cheating in....how the heck do you get Karma when you can't even spell the word the same twice in a row? ... ] Let's see how it all goes....