I'd hope that this forum would be of more value than to just be an alternative to the BGA forum. I know for a fact that Alistair certainly didn't intend for it to be that.
The fact is, there is no online forum for passionate coffee professionals right now. Period. The Roasters Guild and BGA forums are self-selective... they're for roasters and baristas respectively.
CoffeeGeek is geared toward consumers. Alt.coffee is geared toward... alties.
Actually, when I registered the domain name "portafilter.net," my first thought was to create a forum just like coffeed.com, seeing that there was a void that needed to be filled. I chose to go another route, which is what you see now at portafilter.net.
That being said, I'm absolutely thrilled that Alistair has launched coffeed.com.
Mad props to my low-talking shop owner brother in the north.