A PPA is a personal package archive generally hosted by launchpad.net. PPAs allow developers to distribute software in a manner similar to Ubuntu repository items using
Users can add a PPA to their system with the
apt-get add repository command or through the Software Sources application. This allows users to install, update and remove PPA packages just like regular repository packages.
You can use the
ppa-purge command to remove a PPA, or you can remove it through Software Sources.