[Avodah] saying kaddish together

[Zev Sero]

rabbirichwolpoe at gmail.com wrote:

> Allow everyone to say kaddish in their own nusach [I would also demand
> 9 listeners per reciter] "...and to wait for the longest version."
> If 9 listeners per, I could dispense with this last clause completely.

Since when are 9 listeners, or any listeners at all, required for kaddish?
AFAIK they are only required for chazarat hashatz.

-- 
Zev Sero                      The trouble with socialism is that you
zev at sero.name                 eventually run out of other people’s money
                                                     - Margaret Thatcher