Here at All The Tropes we have plenty of different kinds of content. We point out patterns in a work, discuss patterns that may or may not be in that work, share our reactions to fictional happenings and take wild guesses at what happens next -- among other things as explained in Not a Trope. It became clear early on back on TV Tropes that letting all this content mix together was not the best idea, and a rather involved hierarchy of subpages eventually evolved.