May be slightly off topic. And I'm not an English native user, so apologize
for any grammar mistakes! :P
I've been following this list for a while, passively though. I feel this is
a great list including various interesting discussions. However, I also have
found some drawbacks of mailing list that I don't like very much. For
example, threads are a bit disorganized. You have to jump from different
emails to find out what people are talking. If you missed the beginning of
the thread, it becomes difficult to follow.
In China, mailing list only used for news, announcements, etc.