IANAL from Austria.

Afaik explicit consent is not explicitly demanded by the EU. UK opted in to require this in their law. IANAL, currently in Austria it says that the user decision already happens through the browser settings. If the browser accepts cookies, so does the user and the government sees the problem solved.

I second that about the reviews, I see currently two problems:

1) Reviews by people not having bought this product on Amazon

Really, wtf? Why should I care about someone reviewing it who hasn't bought it *there*? Doesn't make sense to me. If I want to get a general review of a product, I need to got somewhere else, ideally where you don't buy it, period.

2) Reviews of similar items mixed together

Search for some random DVDs with BluRay counterparts. Or VHS. You'll suddenly find people reviewing/rating the product (e.g. I'm looking at the BluRay entry of the movie), the talk about the bad quality or something about the content and it's only until later you realize: they talk about the DVD or VHS version. Wtf? Again, IMHO that's complete BS to me.