I like the proof reader/checked by member before bonus points are given idea, so allow me to add my two cents.
Why not have a different set of checkers for each category? For example, I've read and rated most of the Fantasy games here, so I can judge them fairly, but I haven't even touched the Educational section, so I wouldn't know what the standard is. So, if I were to be checking these (it probably wouldn't be me checking, but for the sake of example), then I should only check the categories that I enjoy reading, those being Fantasy, Sci-Fi, Modern Day and the occasional Romance.