Some translation sites has a feature where translations has to be reviewed after they get translated, by someone else than the one adding the translations.

For example, Language L has two translators, named A and B. A translates the word W to X. The translation X will not be added to the export files until B (or any person but A) has reviewed the word and put his/her approval stamp on it.

I think they could be tagged with a flag just as automated translations, and then a project manager can chose if he wants reviews or not per project and/or language. He/she might want reviews in some languages but not in others. Personally I would consider it for German and French since they are pretty big. But a language like Norwegian which isn't big at all in my target audiance isn't as interesting to get reviewed (and harder to find two translators for).

I am posting this mostly since I like the idea and concept and can see the need for it. Personally I don't need it, not now at least, I have too few translators and don't want to burden them with almost twice the work.