At the end of 2023, I will send a poll to Destiny.gg community members on Manifold (probably via the #destiny-gg channel in the Discord). This market will resolve PROB to the percentage of respondents who respond Yes to the question "Do you believe that trading on the Manifold Markets platform has been a net positive for the Destiny community?"
This is NOT a permanent market and it does NOT resolve based on the probability of the market at close. I am trying to provide a good example for how to ask markets about people's subjective feelings. You can, of course, buy and sell shares in an attempt to profit as you do in the permanent markets; just be aware that the market will ultimately close and resolve.
[EDIT: This may no longer be true; see comments.]