there is a weekly 100 mana reward for creating markets. Polls also count towards the reward but are way cheaper to create (10 mana vs 100 mana minimum for initial liquidity) and lower effort (don't need to make calls about resolution criteria).
The polls I make are genuine polls I want to run to get some data about how people think (or at least how people in this odd corner of the internet think). But the incentives for spacing them out over weeks are too good to pass up on.

Resolves YES if manifold staff warns me to stop or ban me for it or if polls stop giving out 100 mana per week.

Resolves NO if none of the criteria for YES are met by market close.