Okay, so what? Is it a blogger or promoter position? Otherwise, why should you have any visible online presence?
The whole thing is about one guy who decided to make a personal website and how he made it, that's fine. But why call it "You should have a personal website" without any reasoning/examples for others? I don't get it.
The author was the interviewer, and the comment came from a candidate that wanted to research his interviewer as preparation for the interview.
The reasoning why he thinks one should have a personal website follows in the paragraphs "Practice" and "Learning".
That's weird as well, I would never research the interviewer (as well as I never got to know the interviewer prior the interview) but instead abouth the company, business, technologies and things like that.
About practice and learning you don't have to have a website, there are many ways to keep your memories and skills up to date.
Put another way:
- Who thinks it's a meritorious thing that someone screws around on Facebook, twitter, or personal blogs all the time? - Who specially wants to work for/with the people who do?
Not that it's a bad thing. But why is it a good thing? And why should we think the people who do think it is a good thing are significant?