Can anyone recommend a Website critique site ?

One thing you can do is try and make the subjective stuff objective instead. Look at your primary competition (like the top 10 for your keyword or the industry leaders) and analyze what they're doing.

Look at their sites, their layouts, navigation, page organization, keywords, offers, pricing, etc. Then visit stats sites like quantcast, spyfu, alexa, etc. and use tools like traffic travis and market samurai. Look at the data and try to determine if any of them are making money. Find the ones that appear to be making money and look even closer at what they're doing. Then emulate them (but never copy outright).

People give all kinds of feedback. Some are more knowledgeable some - less. Personally, I believe that it's better to get 50 opinions of different people than 1 expert opinion. Especially if you don't need to have traffic or spend money on it.

I was previously trying to get feedback for my websites on forums and it was always a lottery. You could get anything from 20 replies with some useful details to no comments at all. And this always frustrated me. And I didn't want to pay for feedback.

So, this is how the idea of Feedback Roulette came to me. It's a community, where you are GUARANTEED to receive feedback, plus the system endorses quality feedback (by matching reviewers by reputation and giving more reviews to those who provide quality feedback themselves).

Of you already have some decent traffic, you can just put a "Feedback" tab on your site (lots of services offer that for free) and you will get some feedback from your users.

But if you are just starting out or have a new concept, Feedback Roulette is one of the best places that you can get your site reviewed (guaranteed!) without spending any money.

Here is some numbers that probably will show usefulness of the service
We received 181 reviews on our site
83 of them was extremely useful so we rated them 5 stars.
49 - rated 4 stars (Useful but lacking some details),
32 - rated 3 stars (somehow useful, but not detailed),
10 - rated 2 stars (Not useful but reviewer spend some time writing his opinion),
7 - rated 1 star (Not useful at all).

If review is absolutely useless you always have an option to mark it as such and you'll not spend any points on that one.

The name of the service (Feedback Roulette) implies some element of luck.
But it also fun to review others' websites.