Well, perhaps you could look at this for the future. The current way of doing things seems to be a guarantee of uninformed, and therefore pretty useless, reviews. The more someone has used a product, the more they'll know about it and the greater the chance of them actually saying something useful.

Since you can remove reviews, I find it somewhat startling that nobody considered the code to add or amend them. It's hard enough being a merchant these days, without this new proviso which effectively means if you don't go five star when a product comes out you never will.