I will resolve any answers to these questions as soon as I see the xkcd posted for the given day and have time to resolve. If it ever appears that the post was skipped (I don’t see anything before the next usual post day) I will resolve all answers to N/A, with the exception of any questions regarding whether or not the xkcd is posted late. If the answer is ambiguous, I will wait to see thoughts posted on explain xkcd, and will either resolve or conclude N/A on the next regular post day based on the possible consensus there.
Others are free to add options. I will delete duplicates and ask regarding resolution criteria for potentially vague options. If you believe that there is potentially a vague option, feel free to comment so we can address the issue as early as possible.
If you have a fun idea but don't feel like adding the question yourself, either comment it or message me your suggestion, and I'll probably add it to the next xkcd market.
I may bet in this market.