That's right, I read about them just a week ago. They offer a subscription trading option. I've been thinking about it too. I haven't studied the question thoroughly yet, but I'm already interested.
Most brokers don't have commission at all, they just have spreads. Only brokers with ultra-low spreads apply commissions. Also, commission is often paid when trading non-Forex instruments (like indices, stocks, commodities, and so on).
I do not pay any commission and luckily I enjoy fixed spreads as well (I was about to suicide from the pain of changing spreads all the time)
So I think everything is fine here!