I can't find it on GitHub. Is it open source?

Remarkably the source is so small I can just post it here.

> Let's write our own YouTube clone based on whatever videos have been recommended on Hacker News.

That's not the source; that's an exercise for the reader.

Obviously they were jesting but it shouldn't be more than a few paragraphs.

> Is it open source? If not, I'm not going to use it.

Don't even use GitHub then as that is also closed source as well as this.