While I personally don't want to spend excess time in course discussion boards typically, it's true that collaboration and discussion of a shared material deepen and strengthen your learning experience. That has, so far, been true here.
You can find interesting comments that make you see the course differently, and engage with it more earnestly (as the above example did for me). You also have the added benefit of engaging with learners that belong to a global community rather than the local community you're used to engaging with — and which may be too similar to yourself to elicit any broadened perception.