The set of rules for having a bowel movement in someone else's house, or possibly a unisex restroom in a public place, intended to minimize the annoyance of others.
Your friend took a giant crap in my house at poker night and left the door wide open. Where's his shitiquette?
The new guy has no shitiquette. He saddled up in the stall next to me for the second time this week. We're not playing {battle shits} for Christ's sake!
n. software that is no longer sold or supported by the original publisher / developer, often found as free downloads on the internet because it cannot be obtained elsewhere. Not legal, but often seen as morally acceptable because the company that made it is no longer selling the title, nor releasing it as freeware, therefore abandonware is "keeping the gamealive", so to speak.
Doom II is not abandonware because idstill sells it, while The Incredible Machine is not sold, therefore is abandonware.