From another perspective, they gave you your 15 minutes of fame. Posting it on your blog didn't get you any attention, right? It was posting it here. HN linke

From another perspective, they gave you your 15 minutes of fame. Posting it on your blog didn't get you any attention, right? It was posting it here. HN linked to your site, and promoted it to their front page, and displayed it with a title you didn't give it. That's totally fine, and expected & encouraged by the larger community.