That hint has been here for a while:

http://hints.macworld.com/article.php?story=20090903104925782

If you don't want to use the Terminal, you can run this Applescript instead:

do shell script "defaults write com.apple.dock use-new-list-stack -bool YES && killall Dock"

My first thought was also "isn't that a duplicate?" when I read this hint (I applied this as soon as I saw it the first time, and it's always been one of my favorite hints on here.) But I never knew about the CMD-Plus/CMD-Minus thing... that sounds pretty cool! I'll have to try it when I get home. Does it stick between uses/restarts?

The time may come when killing your Dock has unintended results. If so, this less forceful replacement for "killall Dock" may be useful.

osascript -e 'tell application "Dock" to quit'

I just discovered that the Command -/+ works for Grid as well. This is fantastic because, for me, the grid icon default size seemed a bit too big. And each folder setting is independent of other folder settings on the dock, so your Download grid icons can be huge and your Document grid icons can be small.

I tried the hint above, and it works, although I am not sure if I like it.
This does allow icon resizing.

What I would really like is to be able to shrink the icons in grid view, but this does not seem to work (10.6.8)

everkleer80 - Icon resizing in stacks (cmd-plus/cmd-minus) persists over restarts and can be set independently for each stack. Very handy.

After trying this I found that apple list look fit a lot better for my taste thanks anyway.