The debate about teaching languages online continues - with Rosetta Stone at the center of this article. With a teacher, without a teacher, with RS or without, the key is still how it is taught and that can differ widely from class to class!
I totally agree with you. I think that RS is a good tool to use in place of a textbook, but it doesn't change the fact that you need more than a textbook to learn something with great quality. Conversation is key and having someone there to converse with is what helps and increases the learning. If you don't use it, you loose it fast.