Someone on this site once said that definitions are a tool to get us closer to an accurate description of who or what we are. It makes sense to use definitions in this manner. It does not necessarily paint anyone into a specific box, but we are members of a site called crossdressers.com and not truckdrivers.com because the definition is more applicable, even if not perfectly accurate, than truckdrivers.com. Once we enter into the blanket of crossdresser we can split more hairs to our hearts content. I call myself gender fluid on this site because it allows most readers to understand the androgynous nature of ME vs something else. Definitions are necessary evils but if used without extremes, can be useful tools in our own self explorations (as the original OP stated)