It's come to my attention that one can mitigate neutral feedback by simply not providing feedback for a trade. This bug report is, in part, also a report of the oddity that occurs when someone gives positive feedback but the other party has not yet left feedback. The party who has not yet left feedback will have a feedback score higher than the number of trades they have completed.

The latter issue mentioned could even be used to mitigate negative feedback leaving someone with a marred trading history to appear to have a perfect trading history.