The submissions [0] appear to be scripted. Most of those appear to be from selected few domains.

Your domain seems to have been added recently [1]. Congratulations!

So whether you choose to blog about tarsnap or anything else, chances are that it'd be posted to HN before you're able to.

[0] https://news.ycombinator.com/submitted?id=dwaxe

[1] https://news.ycombinator.com/from?site=daemonology.net