Can't access the this article, but for window management, I recommend SizeUp: http://www.irradiatedsoftware.com/sizeup/

Among other things, you can define a grid on your screen and move/resize windows in to a given grid slot with keyboard shortcuts.

You notice how inefficient the mouse is for moving/resizing windows after using this. The effect is somewhat like xmonad on Linux, but less strict.

I didn't like gleeBox, so I used Keyboard Navigation for Chrome. However I disliked that it searches for links on the whole page (scrolling to top if needed), but when you want to "click" a link with keyboard, you only want to search inside visible links, so I modified it a bit.

You can see a little demo here: http://www.youtube.com/watch?v=z3ZrUMzBoPI

(note that I changed ESC to focus to Ctrl+ESC in the latest revision)

I haven't packaged it as extension yet, so you'll have to install the original one first https://chrome.google.com/extensions/detail/jdfpnijdiejbheba... then cd into the folder with this extension and pull changes from my fork: http://github.com/dchest/keyboard-navigation-for-chrome

Site's down.