I posted after my FIL passed and my BIL's behavior bothered me. In my mind, his actions were clearly disrespectful to both his father and his brothers. Other posters replied with some different points of view and, all of a sudden, I understood and was "over it." Maybe my initial post included a smidgen of venting, but the positive input made it a mind-expanding experience for which I am grateful. Now I don't have bad feelings when I think back to those dark days after FIL died and before the funeral when BIL was wearing FIL's clothes, which were not black. Because some people on this forum helped me see things from another perspective, I realize that wearing FIL's clothes was a way for BIL to feel close to him. Wearing black isn't required, any more than waiting a year after your spouse dies to date. Different people grieve in different ways.
This is just one example of someone (me ;-) who sort of posted to vent, but benefited from the camaraderie of the forum and learned an etiquette lesson.