debian install not documented well enough

Installing Leo in debian and other apt-get enabled linux distros is not documented well enough, stating merely ""find
and install the debian package". The best instructions seem to from 3 years ago, in mailing list announcement by Ville:
https://groups.google.com/forum/#!msg/leo-editor/9yqhWD90Vtg/yCR8O_FBvIwJ

{{{
Add these files to `/etc/apt/sources.list`:

    deb http://ppa.launchpad.net/villemvainio/ppa/ubuntu jaunty main
    deb-src http://ppa.launchpad.net/villemvainio/ppa/ubuntu jaunty main

Then, run

    sudo apt-get update
    sudo apt-get install leo

And run `leo` from command prompt.
}}}

A recent user reports this install method still works, albeit with a warning, https://groups.google.com/d/topic/leo-editor-users/y6ZwJR3accs/discussion