I know a few people that have attended them and found them to be a joke. There is not enough room for everyone who wants to attend, so you have to get there pretty early. They also don't allow much time for public comments either. When you know you are always having to turn veterans away from attending because you don't have enough room; you should find a larger venue to hold the town halls. Some of those who attend drive more than 2 hours to be there and are often turned away.
I will try to remember to participate in this one being live streamed, but I won't be surprised if it's unproductive.