This is just lovely and very well-timed for people starting new year's resolution blogs next month :) Congratulations to the author. Would supplement it with this: http://www.pearsonified.com/2011/12/golden-ratio-typography.... And the super-handy related tool: http://www.pearsonified.com/typography/
There are times when constants like the Golden Ratio are relevant and the exact value matters or some useful property doesn't apply. This is not one of those times. There is absolutely nothing "perfect" or "optimal" about the typography you'll create from this "solid mathematical basis", no matter how much TeX you use to typeset your equations or how many colours you put on a chart. In fact, with a lot of popular web fonts today, you'll get very dubious results.
That entire article is just a glorified troll, which I'm only responding to in case anyone impressionable reading your post otherwise thinks it's worth anything.