By the way, I have a question: what is the best learning material for intermediate/advanced Vim users? I know quite a lot of Vim features but apart from vimtutorial, I never learned them in any organized way - it was more of a bunch of tricks I found via googling. It would be nice if there was a book (preferably free) on this editor.
Get a pdf of it here: http://www.eandem.co.uk/mrw/vim/usr_doc/.