Blowback is a Japanese Arch user.
My translation policy
Which articles should not be translated
I think every important (and updated frequently) articles such as Beginners' Guide should not be translated. Because to keep the translation up-to-date is too heavy task so I believe it will never last long. I think all Arch users should read original English as for common and important articles.
Obsolete documents are destructive in some cases.
Which articles should be translated
The articles introducing Arch to new to Arch.
Sorry for my broken English.