It's the number of posts for the 'members' you become moderator when you have a forum to look after, (usually it's Jon BRODERICK that decides who gets to be one, usually it's an active member that's been there for 6 months, and that has a pretty good knowledge of the topic). 'Hosts' are voted for when you send an application to the site. The whole hosts boards accepts or declines your membership. As for the grizzled veteran, you gotta post around 1100 posts...