What is the most popular web forum specializing in general discussion of LaTeX? I'm asking for standard LaTeX using pdftex, not LuaTeX or XeTeX or ConTeXt. But, If there's a popular forum that has general open-ended discusses of ALL TeX varieties, then I'd like to visit it to too, if a large volume of it is regarding LaTeX with pdfTeX compiling.
Background: I'm currently an end user, using LaTeX to typeset books, soon to be self-published commercially. They are mostly narrative in small format, such as 8.5" X 5.5". I've discovered LaTeX is an extremely powerful and efficient system for what I need.
I don't use it within a scientific/academic setting, and so I say that without using one of it's most lauded features: mathematical typesetting, and technical style sectioning and sub-sectioning.
I'm helping plan a small Indie-Publishing outfit and would like to develop some templates to personalize our style. I could even see developing a class for us, strictly for narrative books, perhaps one day even forking LaTeX for us (perhaps others who might find it suits them too) I'd like to have a version customized for narrative books, that includes a simplified "markdown" environment for writing the chapters of the book with less "code" scattered around in it, then using something akin to "/input{filename}" to typeset it professionally for commercial publication.