did u expect someone to be keeping track of any comment you posted on every site on the net? like a 3rd grade teacher keeping track of book reports or books you've read? sorry if i sound condescending, but maybe an easier way to understand how it works is that you're not asking your mom "may i please be excused now??", you've just got to fulfill the requirement in THIS feedback system (automated) and if it sees you have > (greater than) or = (equal to) 8 reviews on your ONE username, it will allow you to proceed to the uploading section. so for the same reason, if you have multiple accounts, its not going to add your totals together, even if you put in identical user info (like your name, etc). Also, as far as quality control, if you do just spam bad reviews, i do think the mods can/will delete them (and they wont count towards your total) because this is a feasible task a mod could do just by watching that feedback forum.
you know, maybe what you were thinking it did would be a good idea if it weren't impossible because you'd actually have somebody making sure you were writing quality reviews and such, but there's just no way to keep track of everything you've ever written on any other site on the net, especially by somebody not getting paid to do so.