The sidebar, permanently-fixed and consuming more than half of the screen, makes this blog completely and utterly unusable on a mobile device - that is, unless you're attempting to find the author's twitter or send him an e-mail.
EDIT: Additionally, this concept is already implemented rather well via various[0][1][2] browser extensions.
Added some responsive CSS for mobile users. Thanks for reminding me.
Originally, my idea was to make this into a Chrome extension, but reading through the documentation it didn't seem possible to make text in the omnibox clickable. Very impressed with the Firefox addons though. Thanks for the links!
EDIT: Additionally, this concept is already implemented rather well via various[0][1][2] browser extensions.
[0]: https://addons.mozilla.org/en-US/firefox/addon/ui-enhancer
[1]: https://chrome.google.com/webstore/detail/breadcrumb-navigat...
[2]: https://addons.mozilla.org/en-US/firefox/addon/locationbar²-...