Hmm! On the one hand, I like his blog and yours! On the other hand, it's unusual to have to do so much scrolling sideways? Obviously it doesn't normally matter when Markdown gets rendered out, but some mid-sentence line breaks wouldn't go amiss for this presentation style.
I could manually break lines at 80 columns, but the fundamental problem with serving plain text on the web seems to be that most browsers don't wrap long lines in .txt files. Firefox does (and there's a toggle for it in about:config), but Chrome doesn't and 80-column text gets mangled in mobile unless you set your device to landscape mode.
Dammit.