Can I use the Launchpad translation service for my GitHub project?

Short answer: Yes, Launchpad can be used to manage translations for a project on github.

You can test launchpad's features with Launchpad Staging.

• Register your project on Launchpad. (Instructions can be found here.)
• Set up Launchpad to automatically import from Github. (Launchpad help page)
  Use https://launchpad.net/PROJECT/trunk/+setbranch to set up Launchpad to import automatically from Github.
• Set up translations. (Launchpad help page)
  Use https://translations.launchpad.net/PROJECT/trunk/+translations-settings to select what is to be imported. Translation templates alone, or along with existing translation files, can be imported.

How things work?

• You push to github repo you set as source in step 2.
• Launchpad periodically checks, and updates the bzr repository.
• It then scans for any .pot or .po files, and adds them to the translations import queue.
• After a short while, the strings appear as 'Needs translation' and can be translated like anything else on launchpad.

What about pushing back to Github?

Sorry, but I don't think Launchpad is capable of that. However, LP can be set up to commit the translation files to a bzr branch on LP. It also allows you to manually download the translation files. These options can be found in the translation settings page.