I agree with the first point. I don't live on Reddit like a lot of people and unless you happen to get somewhere just as a conversation is starting, you have no chance of being heard. That and it doesn't matter what stance you take on what subject, it seems like your inbox will always be flooded by a tonne of armchair experts informing you why you are wrong, usually in a less than civil manner.

As to your second point, do we know the number of users joining? I'm wondering if there's just an initial burst and then regrettably it loses steam?