The Yahoo Geared Hub Bikes group celebrated it's fourth anniversary last week and is now up to 566 members.
It appears that it has become THE English language site for exchanging information on IGH use, repairs and general discussion. For the last 18 monthas or so it has been more active than this group, with less than 1/4 the members. I know that some members here are also members there. More are always welcome.
For anyone curious about IGH units or bikes, cargo or otherwise, below is a link to the group.