How to join a Yahoo group whose moderator?

Question

does not seem to be around for the past few months

Answer 1

If the group membership requires moderator approval and the moderator is gone, you won't be able to join.  You'll have to find another group or start your own.  Or if membership is open, but messages require moderator approval, you'll be able to join, but not post, so again, find a more active group or start your own.

Answer 2

You can try to contact the owner of the group via the following address:

[e-mail]