I was compiling information for an essay I'm doing, and stumbled across this website: http://starling.rinet.ru/music/index.htm
I was originally pulled onto there when searching for Kinks info, but ended up looking at the Beatles section two. This guys a tough critic, but makes some great points, especially about the Beatles as a band. It's not for the faint-hearted, if you don't like reading too much criticism, but he has an important opinon on the way people perceive The Beatles these days...
So hopefully not too irrelevant. Loads of stuff on loads of bands, not just our boys.