Latest blog post is not under /blog

All the Google SEO points to https://keybase.io/blog but https://keybase.io/introducing-the-keybase-filesystem is no where to be found. Worth at least linking to it from /blog. (Or get rid of /blog if that URL is dead.)

Inspect https://keybase.io/blog and https://keybase.io/introducing-the-keybase-filesystem to understand the current navigation and whether the article is reachable. Resolve whether the intended outcome is linking the article from /blog or removing the dead /blog URL, then verify the chosen URL behavior.

Written by the indexing model from the issue text.