1. A thing in which the nerds and social rejects of the world come to join one another in the fine arts of accusing someone of being a "FUCKING H4X0R FAG" or saying "I OWN YOU", all while masked by the anonymity that is the internet.
2. An activity in which, should its contents are taken with a grain of salt, can provide endless hours of happiness.
Nothing like firing up some CS:Source and spraying some offensive logos to watch the hardcore gamer's responses.