Hey, I don't want to derail that difficulty thread so I'll answer your question here.
Staff doesn't necessarily pay attention to that. It's for everyone who's interested in knowing how hard a game is, etc.
It's always been that the are more legit votes that are posted so in the long run, the averages even out to the correct number. Say there's 40 votes for 10 but 4 votes for 1... The average is obviously going to be near the 9/10 range.