Any subject of a polarizing nature can feasibly cause flaming. As one would expect in the medium of the Internet, technology is a common topic. The perennial debates between users of competing operating systems, such as Windows, Classic Mac OS and macOS, or the GNU/Linux operating system and iOS or Android operating system, users of Intel and AMD processors, and users of the Nintendo Switch, Wii U, PlayStation 4 and Xbox One video game systems, often escalate into seemingly unending "flame wars", also called software wars. As each successive technology is released, it develops its own outspoken fan base, allowing arguments to begin anew.