Hello Michal,
Thank you for your email and for raising good questions. This is how I
interpret why they should be treated as brands:
- I believe the official Twitter accounts from MoCo are @Mozilla and
@Firefox.
- As brands, both should be left unchanged, which was the conclusion
from the last brand discussion.
- As for the local versions where declensions are used, are they the
official Twitter accounts from the company? If yes, I will check with
marketing. I believe on the
mozilla.org site, the intent is to direct
user/reader to the official channels. Having said that, the posts are
likely in English only.
Peiying