Rails 3 beta: First impressions on a new app (nathanhumbert.com)

Ok, and why this got to the hacker news? Instead of this http://guides.rails.info/3_0_release_notes.html or just any other of these links http://www.rubyinside.com/rails-3-0-beta-links-2966.html ?

I don't use Rails but this post looks like it provides close to 0 informational value.