A nice feature would be to limit the number of high scores to a admin settable amount. For example, I currently have 550 high scores saved for Snake. I'd like to be able to limit all games to say the top 50 scores. If a player gets a score that's not in the top 50 they do not get asked to leave a comment. If they make it into the top 50 they'd get a nice little "Congradulations, you scored in the top 50, leave a comment" type of thing.
I figure it keeps the database a little be cleaner too.