Yes, there are two yahoo groups who use his protocol specifically and one other very open group that uses anything but many on there now use his protocol.
The first two specifically about andy's protocol are:
And the other group that I have found excellent is the herballure forum. I cannot put a link on here because it does not work, but I can direct you. Just search -viewing forum Amalgam poisoning on the net. I personally find this one to stand out and the help given on there is tremendous.