Every distribution registered in Launchpad has a "PPAs" page, for example:
* https://launchpad.net/elbuntu/+ppas
* https://launchpad.net/baltix/+ppas
* https://launchpad.net/tilix/+ppas
* https://launchpad.net/gentoo/+ppas
* https://launchpad.net/fedora/+ppas
However, when signing up to get a PPA <https://launchpad.net/people/+me/+activate-ppa> you are told that PPA packages "can be custom versions of Ubuntu packages, or completely new packages, and can be built for any supported version of Ubuntu". And once you have signed up, you are given a PPA URL and sources.list entries that seem to preclude creating packages for any distribution other than Ubuntu.
I suggest that distributions that don't use Launchpad for package management should not have a +ppas page. (Then if any distribution other than Ubuntu starts using Launchpad for package management, the problem with the PPA activation process assuming Ubuntu can be fixed then.)
Fixed in stable r17725 <http:// bazaar. launchpad. net/~launchpad- pqm/launchpad/ stable/ revision/ 17725>.