I find it particularly noteworthy due to fact that this blog has one page for desktop and mobile, and it fits damn near perfectly in both.

In Android 2.1, the only things that don't stack up exactly right are the "Social Club" section in portrait (vertical) mode, and the Pipe graphic at the top in landscape mode, which creeps over the dotted line slightly. There is no horizontal scrolling, and the least important stuff (that on the right, in a desktop browser) falls to the bottom.

It shows a great knowledge of CSS that is not readily seen today on many, if any, websites.

I see no such unboldedness when said links are clicked. Regardless, not the point of the article at all.

Very nicely done indeed! Does it play nice with IE? (Can't test it because I don't have a Windows machine at home). CSS would be much more pleasant to work with if it was consistent across different browsers...

Not entirely sure, but it looks he uses some js to fix some things for IE8:

<!-- to help IE recognise the new HTML tags --> <!--[if lte IE 8]> <script src="/js/html5.js"></script> <script src="/js/css3-mediaqueries.js"></script><![endif]-->