We require questions here on Skeptics to be about notable claims. This restriction is necessary to keep the site somewhat focused, despite the fact that we essentially accept questions about pretty much any topic imaginable.
The enforcement of this rule has proven to be contentious on occasion, and it wasn't always consistent while we were still figuring out how this site should work.
The goals of these guidelines should be to make sure that the questions on this site are relevant and not just random idle thoughts. But we also need to keep in mind the effect this rule has on the impression of new users.
How should we enforce that claims are notable?