Jirong and Bob,
Sorry to ask this question. I found this mailing list here,
but seems not much activity as I expected.
Ahhh - you've presumably looked at the SVN mailing list and seen the 30+
messages every day. You are right - this mailing list traffic is
comparably low.
The correct explanation is one or more of these reasons:
A) CVS is easier to use than that other software, so people need to ask
less questions
B) CVS has less bugs than that other software, so people need to ask
less questions
C) People who use CVS know how to search the mailing list to find
previous answers, so do not have to ask the same questions each day
D) People who use CVS are more dedicated to the GNU philosophy and if
they find a problem, simply fix it and submit a patch rather than ask
why it doesn't work
E) People who use CVS can't be bothered writing e-mails, if it doesn't
work they just don't bother checking in
F) People who use CVS can (and do) read manuals
G) People who use CVS know the value of time and so are happy to pay the
authors to come on site and help