Never heard of this, lemme google it. Aah cool the Wikipedia!

implemented by a team at Namesys led by Hans Reiser… Namesys considered ReiserFS stable and feature-complete and ceased development on it to concentrate on its successor, Reiser4, though it continued to release security updates and critical bug fixes.

Oh cool, Reiser4 will be great!

Namesys went out of business in 2008 after Reiser’s conviction for murder.

😐