It is set to 0. For some reason on rare occasions it doesn't get set on new members immediately, not sure why that happens. I might look into it some time.
That reminds me, when I click on the members list, and there are over 80 pages worth of people with 0 posts. Only a bare fraction of the members actually post.
And that might be the only reason I'm making an effort of moving out of the depths of "zero-postness". After all, I've made quite some effort on several Werewolf games, so I'd hate to be considered one of the "register but never post" people.
Yeah, some recruit who joined and then never used his account named Apollon stole my name! I had to add my lucky number 4 to my name. Though I guess that does make Apollon even more awesome...
The only accounts I ever plan to delete are the ones where the person never completed the registration process by confirming their e-mail address. If someone went to the trouble of finishing the account setup process but have no posts, they might eventually decide to post some day.
And I don't think that that's a problem specifically with Taleworlds. Every forum whose member list I've viewed has about 80% non-posters. I guess 80% of the online population just have a hard time making up their minds (or are forgetful, or very busy).