Hi,
For anyone who is tired of spam, I have a sarrusophone group at Yahoo as well (sarrusophone2). The reason that there are two groups is that we started these groups at different services, and mine was later acquired by Yahoo.
I have no complaint against the owner of this group, other than he hasn't been able to moderate the group recently, and hasn't (or can't) take steps to prevent the spam we're now seeing. My policy is to moderate new subscribers, and ban anyone who sends obvious spam.
So, feel free to switch!
Grant