We have a policy that states
The idea here is that once a large number of people are exposed to the claim, it is of general interest to validate the claim and either confirm or refute it.
I have a separate question asking what kind of sources can satisfy "a large number of people". Here I want to ask what is a "large number".
We have one user which has told me in chat,
The term large number isn't defined anywhere and depending on context 50,000 can be small or large
I would like to make our policy clear enough such that 50,000 people being exposed to a claim is always "large enough" to be notable. I would be willing to go down too. But I think we can set an objective floor for "large number" to stop some of the malicious trolling on this site.