Here we compile questions that might be useful in a survey to determine "market need and awareness":
How old are you?
How often do you use a wiki?
How many wikis do you read?
How many wikis do you participate in actively?
Which wiki engines do you use?
If you use multiple wiki engines regularly, do you see a need for a common wiki markup?
Have you heard of Creole?
If so, what is your opinion?