From the blog post: "Now I’m wondering if I had continued to work on it, if I hadn’t neglected it could it actually be a useful successful, dare I say profitable project?"

I'd argue it's likely successful just for the mere fact that he _hasn't_ touched it in four years. Had he actually tried to monetize the project, he probably would have just gotten in the way and screwed something up. This gives evidence to the "simple is more" rule.