I was asked recently to give some feedback on texts written about the beta release of Internet Explorer 9, by Tom at ABC Copywriting.
I had to judge the articles based on their technical correctness, and against a pre-determined specification. To keep it fair, i received the articles in a word document, so that my comments couldn't be swayed by any further comments on the blogs of the writers.
My feedback was then fed back to Tom, and he's compiled this article on his blog :
http://www.abccopywriting.com/blog/2010/10/28/copify-nublue-quality-copywriting/