Presentation is everything. There is already amazing work done and I believe it would be a shame that bitcoin.org and weusecoins only get a restricted audience. Official Bitcoin client and blockchain.info are now internationalized. I think it's time to do the same with Bitcoin online presentation.
Stefan Thomas is most probably working on things that really requires him. So I suggest that he delegates this part to the Bitcoin community. After all, I'm sure that we have, on this forum, many people speaking many languages that would be willing to participate. That of course, if they agree.
Here is 3 things that probably need consideration :
Social network / news integration (twitter, bitcoinwatch, etc)Those are all pure english from now. It could be necessary to remove them until localized groups / news websites / blogs emerge.
Or to find appropriate existing replacement, if possible.
StackExchange integrationStackExchange provides many questions / answers, but english only and cannot be translated.
So it would most likely require a static equivalence that could be translated.
Future updatesThe way each website is translated should not be too structure dependent, so if we don't find a translator for a specific language in the future, it will still be possible to update the content of the pages for all languages except the few problematic ones.
I would gladly offer myself to make bitcoin.org or weusecoins.com multilanguage and provide french translations myself.
You know you don't need to ask permission. Just make a translated site and promote it. If it's good enough maybe the devs will see it and link to it. Nobody needs to ask anything with Bitcoin. Nobody controls it. Just do what you like and the free market will sort it out. The devs are often too busy for administrative decisions.
This is fragmentation. Not bad in itself, but working in team in such a case always create more powerful results. And since the content is MIT and CC licenced, it does not represent a single point of failure, even if it does a bit of centralization.