well, i know there were problems at the time, buit i did that to 2 mods.. and it never got posted. I don't have it anymore, so that's a pity. But maybe you could just make a user called 'Reviewer' (ya, shitty name just an example) and let the mods promote you to it if you submit a good review. Also, make the forum non-repliable. There are major flaws to this... if i think of a better solution, i'll edit.
:/ annoyingly, u could put the double reviews into one topic... but that isn't too fair because the person who made the first review will have theirs read first, and people don't always want to read more than one if the first was long.
why not, for new releases, make them into a poll so you can vote on how much you liked the game? Nahh.... people could just vote without having played it. I'll shut up now...