I'm You-Cheng Hsieh. I do not use Launchpad, nor do I recommend people to use it. I'm not a developer of Ubuntu and Canonical. If you want to help translation of KDE and other free software projects, please contact their respective upstream source. Please do not translate your language in Rosetta, that will only cause more problem for upstream and do nothing helpful.
If you want to try out linux distributions, I recommend you Mandriva, OpenSUSE, Fedora, Slackware, or Debian. I do not use any of Ubuntu and its derived distributions. There are many Linux distributions around the world, and Ubuntu is not your only option.
The Launchpad platform is not free software or open sourced software.
You-Cheng Hsieh is not an active member of any Launchpad teams.