I've been tempted to start a blog...I've gotten a few requests on HN...but I'm still in the "rather be a programmer than a web celebrity" phase. I'm afraid it'll be too much of a distraction from my projects. Plus, I usually write better in response to a prompt than coming up with content in a vacuum.

You could perhaps consider turning a such 'response to a prompt' into a full-blown post on whatever easy-to-use blogging system (Medium, wordpress.com, hell even pastebin or its ilk?), and linking to it alongside a comment.

On HN, I often check specific commenters activity, or new comments in a thread that can be days-old, because I often find hidden gems. A link to more elaboration would definitely count as such. Perhaps an audience of even just a dozen or so people like me might be worth it.

EDIT: Coincidentally (I swear), there's exactly a dozen of comments that positively engage with your comment!