I looked at http://www.vim.org/maillist.php and came across https://groups.google.com/forum/?fromgroups#!forum/vim_use. I came across plenty of tips there, but that's mostly in QA form. If you want to read just tips, try http://vim.wikia.com/wiki/Vim_Tips_Wiki.
(and then probably go all grumpy when people don't use vim the "right" way)