Yes. I didn't realize they were links till I got to the ones labeled "here". If those hadn't been on the page I would have likely finished reading and left completely oblivious to the links.

Holy cow!! I didn't read the whole thing, but going back, I thought it was just the author's very peculiar style of emphasis! Like writing comic-book style: (1)

I thought he was doing it to be engaging, and make you really focus on his point!

[1] http://www.comicbookbrain.com/_imagery/_2007_07_27/bb119_pg5...

Harder. I think blue-underlines are the easiest for me to read. It might be familiarity.

I liked it after I realized what was happening. Blue on black is too busy.

Didn't notice that certain words were bolded until you pointed it out.

Bolding places emphasis on the word being bolded, whereas underlining places emphasis on the line underneath the word.

In the context of a URL, usability would dictate underlining links, to match convention.

Harder.