Curious how someone came up with the 15M post measurement for webmasterworld? Their home page shows 2.7M... http://www.webmasterworld.com/home.htm
Actually, I sort of recall something like webmasterworld counting their private messages as "posts". If that's the case, it probably just has something to do with how their internal database system is structured (maybe all public and private messages as lumped together). If that's the case, this forum has over 40M "posts" (12M+ public posts, plus 28M+ private messages).