(1) Docker, Inc., who plan to sell paid support, training, and services (think Canonical/Ubuntu).

Why do you '[1]' links?

It's a pretty oldskool way to indicate footnotes in plaintext. These days footnotes are often links.

Part of HN's convention, especially since there are often more than one link, is to use end-noted links rather than inline ones. This makes the prose easier to read, and still makes it easy to identify and annotate the importance of links.

I kind of wonder why HN doesn't support [Markdown-style](http://daringfireball.net/projects/markdown/syntax#link) links. It almost makes me miss Reddit.

I suppose it's to make it clear where links go, and discourage trolling... but browsers failing to show you where links go is a failing of browser chrome, and people who are concerned about that can install extensions that make link destinations more obvious.

I'm to lazy to do the classier footnote¹ most of the time.