That would be good, for those who can write it in two languages.

We have to give some thought to how we would organize it, though.

If you do it, do it well, I'd insist.

For instance, if only one in 10 stories is available in French, that isn't ideal, it's discriminatory. So you would need pretty solid and quick translations (you can't have a 10-day delay).

Also, in the Comments threads, things can become pretty messy, if you have long strings of people reacting to each other. You don't want to force them to scroll more than already necessary. There must be a point of "scroll fatigue". I'm sure that already happens over at TOD, there are regular complaints about the scrolling through hundreds of posts.

Still, the threads, we can just see where it goes, and act when we find it gets out of hand. For the stories, we'd have to have a concept beforehand.

One solution would be separate threads, but is that so great?

Another option might be to include buttons for "All languages", "English only" and "French only", if technically feasible.

But I'll admit the separatism issue is ugly in my view.

We're actively thinking about it.

I agree, it requires some thinking! BTW, I don't know if such forums or blogs exist on the web.
I would suggest that we mirror the story on another hidden page in French. Then the commenters could react to folks in their own language.