What is concern trolling exactly? Trying to change a community more to your liking because you dislike its rules and want your rules to reign supreme, by expressing concern about the ways of the community.
Concern trolling uses gentle methods to create havoc and discord.
Those methods usually involve "asking questions" about meta stuff. Some forums exist in uneasy balance between a group who'd ban a lot more people and another group who'd ban many fewer people. A skilful concern troll destroys that balance and has those two groups arguing.
