Sorry I missed this one - I'm the webmasters mod that sysadmin1138 referred to in their answer.
They are absolutally correct that we define a webmaster in a fairly narrow scope, but there's a very good reason for that - Server Fault is a better place to get answers about configuring web servers.
Additionally, it's not true that "Almost every webmaster deals with a server" - if that were true then CPanel would just be a small footnote of a failed project in the history of the internet. The real fact is that 90% of the sysadmins we're dealing with are using a commercial hosting package from GoDaddy or somewhere like that. With such a small footprint of server administering webmasters, we will never reach the critical mass required to provide the awesome answers that Server Fault provides.
So we drew a clear concise line in the sand. Server related - Server Fault. Not server related - Webmasters.stackexchange.com
There are a lot of people (like myself) where I play sysadmin AND webmaster, and when I need to ask questions about Apache or IIS or Sharepoint I ask on Server Fault. And when I want to know about transparent PNGstransparent PNGs or the hateful piece of software that is QuickTimethe hateful piece of software that is QuickTime I ask on Webmasters.