What does a griefer look like?
Look around, look at the person next to you, a griefer doesn't come with any defined look, nor do they wear a big sign that says "Griefer". The age of an avatar does not necessarily make them a griefer, whilst it is true that griefers make disposable accounts, there will be older residents that have griefed in SL and are still around.
A griefer is a player who does things in a game to deliberately cause annoyance ("grief" in the sense of "giving someone grief") for their own enjoyment. Such players are a particular nuisance in online gaming communities, since they often cannot be deterred by penalties related to in-game goals. The term originated in the early 1990s, when online games were growing in popularity.

