How do members get Star ratings with poor grammer/English?

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I was wondering how so many members are showing up with Star Ratings when they (not all, but quite a few) have such poor sentence structure, grammer, and language? Some of the members with Stars have discussions so poorly phrased that I can barely make out what it is they are trying to say. I also see members with Stars asking novice-like questions -- shouldn't those with Stars have a better understanding of their role here and how the system works? Just how do you get a Star, and what are the qualifications to get one and keep one? So far I do not see too much sense in the whole thing.