Thanks all! Some of the things mentioned (logo on the top left) are ones I've already noted and wanted to do, the logo one is an issue as it's a DIV tag with a background url specified, and there's no text on it. I'm going to remove the background image part of the CSS and actually put the image in with an IMG tag so I can put a link on it.
Particular thanks to admagic, some very useful pointers there! I noted (from Clicky, love the Spy page

) that a few people looked but didn't appear to comment, I'll assume that's a good thing
