I don't see why I would ever give anyone a neutral rating. If I have had no dealings with them and haven't seen them acting in an untrustworthy fashion, I'll just not leave any rating.
Currently I see a bunch of dice sites taking "investments". Historically that's been pretty dodgy, with a few sites running off with the invested coins. Does that mean I should leave a "neutral" rating for the sites which are still running successfully saying I suspect that they might run off with the coins even though I have no proof that they have any such intention?
It's a self-fulfilling prophecy right now. Since neutrals (I'd prefer they be called "suspect") don't get reflected in the design scheme to the left (poster_info) in rating display=on subforums, there's no point in leaving any, or having a neutral rating selector, at all.
I would like to see a yellow number under the User name with the amount of warnings to entice others to view, but we have a workable fix for now. Thanks Theymos.
Keep in mind: Almost any system implemented will have bugs and abuse at some level.