There is some very shady SEO going on here. The French translation link goes to a Wordpress blog with a very bad translation of the introduction. The root of the translation website is a completely unrelated Dutch used car website.

Other pages on the translation blog follow the same pattern: an old webpage (this HN entry is from 2009, but other pages go back to 2000) is edited years later to link back to a bad translation in some random language.

This is very far from my area of expertise, so I'm curious to know if this is well-known, and if those pages were hacked or if this was inserted by the owner himself.

EDIT: This is fascinating. I'm finding dozens of similar blogs, with links spanning at least a thousand hosts, which I'm assuming were hacked. This is a big network, with sophisticated wording designed to look as innocent as possible.