Some suggestions for Immersion interface
Now the popup edit window opens just to the right from the end of the current sentence: http://img402.imageshack.us/img402/2504/screenshot341851886.png. It would be better if this popup was in some fixed position further to the right so that the surrounding sentences were visible as well.
After I confirm the existing translation or submit a new one, the edit box continues to display. Why not close it automatically once the user submits the translation? I usually prefer to read the German sentence first and try to figure out its meaning. Only after that I click it to open the edit box and compare my understanding with the existing translation. So, after submitting a translation, I first have to click elsewhere to hide the popup box and then, after I'm finished with thinking over the next translation, click this sentence. I think I could do with one click instead of two (no big deal, but this edit box staying in place after I submit always confuses me).