I think all these points have beeen covered, but I'll add my tocuh to what I believe
I think that peoples opinions are all right, it's just some are based on a wider range of coasters and experiences, while others a lot smaller. I have to admit, I rated a few coasters higher than what they are because I was 'inexperienced', but some coasters do change over time and peoples opinion therefore changes as well.
Gavin, you might get a few PM's from me asking for the ratings to be removed once I sift through and see what coasters I over rated :lol: