Quite interesting article, but I have to disagree on one point.

Anyone who has ever blogged can tell you why: it's a lot easier to blog a quick link than it is to come up with your own content! When you come across an interesting link during your surfing, just stick the link in a blog window, snippet out a quote, and (if you're up for it) add a quick comment. It may only take you a minute... but if your visitors check out the article, then they could up to half an hour of reading out of it.

Compare this to a personal blog about your life - it can take half an hour to write, but your readers only get a minute of reading out of it. With such brutal time-economics working against personal blogs, the majority of blog posts are made up of the familiar link + quote + comment.

Perhaps. And perhaps, it's exactly what I'm doing right now with this link, too. But there are a few things that the author of this article overlooks.
Firstly, blogs, for what I know, were originally born not as "personal diaries", but as what are now known as "linkblogs": places where the person running the blog linked the interesting things he or she found on the internet. Then, later, they morphed into the several varieties of blogs that exist today. I could list at least three: the "linkblog", composed entirely of links; the "personal blog", composed entirely of things about the author, like a diary; the "story blog", where people who like writing collect the fragments of stories they write. And in addition, most blogs are not that clearcut: a blog could be, for example, mostly personal, with a few links and the odd story fragment.
Secondly, a person is free to do whatever they want with their blog. If they want to do only the link+comment, then let them. If they want to do only the personal stories, then let them. One is not better than the other, one is not easier than the other, one won't make you more popular than the other.
For a linkblog, true, it is easier to spread links and memes, which was the point of the article, but it does not make them better or easier to write than personal blogs. Most blogs nowadays are mixes, anyway.