Unfortunately enough buyers read "Time taken to post" as "How long was it before I got it". Enough to take away that TRS.

I have had items sent within Australia take over a month to get across the city (even though posted same day as item paid for). This isn't often, but happens often enough to destroy a sellers TRS.

As regarding who leaves these lows - If it is genuine, the comment comes with the positive feedback - something like "nice item, but took ages to get here".

I think there are a few buyers out there who accidentally press the 1 star instead of the 5 stars. Once it is done it seems it is impossible to change.

My other thoughts regard "item as described". How on earth do we address this issue if we are unable to tell who was unhappy.

It is a an imperfect system, but the question is - Can it be improved and how? - there is a suggestion box, I think under customer support somewhere. If you think the system needs fine turning/changing, let ebay know. I've done it, but that won't happen unless more of us do something about it.:-D