[theoh]

I genuinely hadn't noticed the meaning of the diamond links - I wasn't just making a cheap shot. In fact they are confusingly diverse: his own mailto: link is a diamond link, as is this URL on the Acknowledgements page: http://practicaltypography.com/contact.html

It's totally acceptable, if a bit Knuthian, to expect a reader to learn a few typographic conventions, but they should be well considered. Don't make the reader hover to find which words are part of a given link.

It is probably worth remembering (as this is HN) that design is partly a personal and subjective thing. I am fairly interested in typography but I wouldn't hold my opinions out as the one right way to do things. One thing I have never thought while studying typography is "I wish this author was more pedantic and conventional, I don't know, maybe like a lawyer?".