[Manishearth]

I don't think blog posts lack merit.

There's only so much you can put in docs, and docs can only really encompass one way of learning things.

Blog posts help teach things in other ways, and having that diversity of approaches is great.

This is why, for example, I love Julia Evans' (http://jvns.ca/) work. Most of the blog posts don't really uncover undocumented stuff. They just explore the topic in a novel way, which some people may find more accessible.

Rust is open to importing blog posts into the docs; this has happened a few times (once to one of my own posts!). So I'm happy that there are blog posts out there.

That said, if you're writing a blog post, it's good to see if there are bits than can be put into the docs too.