I'm considering an expansion of Photics.com to include translation of App descriptions. Are you interested in such a service? It could be $2 to start plus 7ยข per word. German would be one of the first languages. If this seems popular enough, I might be hiring additional translators to cover all of the languages on the iTunes App Store. This is not just a cut & past from Google Translate. You can see the quality by visiting the iTunes App Store... http://itunes.apple.com/de/app/commove-for-ipad/id374171141 With translations of your app, you can reach a larger audience.
I don't know any languages besides English, but if you are doing a Google Translate from a foreign language to English, I could help edit it to make sense...
Why don't you outsource it from any reliable translation services. I mean they really provide you better quality of interpretation and translation work. Anyways good to know that you are not dependent on Google translator!