I should assume from the question that the thread number will show in the interface somehow? Because if you just put the name of the other party in the thread you could start numbering from Q internally if it makes you happy.
If you are showing numbers, go with 1-9. Normal people will not feel warm and fuzzy about zero relativity.
(no subject)
Date: 2008-07-24 05:58 pm (UTC)If you are showing numbers, go with 1-9. Normal people will not feel warm and fuzzy about zero relativity.