And as so often with Mozilla has the translation-feature an awful user experience. It's not showing itself, unless you are on a site with a supported language. And supported means, the language-pack is installed. How are people supposed to discover this?

Additionally, the auto-discovery seems to appear only once per domain? I tested it on Wikipedia, and after the first article, it never shows up again. But I guess this is ok, after all that dialog is Fu*ing huge. Couldn't they choose something more subtle? It's their own browser, they should have all the ability to make proper integrations for something like this.

This is overall a really great feature, which could have great use for people, but as it's now, it's more likely to be removed again in a while, because "nobody is using it", like so often in the past.