I'm new to Duolingo and I am really enjoying it but I did have a question as to what happens to the corrections that you make? For example, I have made several corrections or comments on why my answers should be accepted as well. Do we receive any feedback on this at all?
They will actually email you if they've changed something based on your feedback for a sentence.
Although, somewhere, I read that the vast majority of the feedback on sentences are suggestions that are actually incorrect.