Earlier quoted context omitted.
Something I've found surprisingly effective is telling ChatGPT to "use credible sources" - you can then watch its thinking trace and see it do things like ruling out random blogs, considering media publications with a good reputation for fact checking, and double-checking information that seems unlikely.
I don't think random blogs should be ruled out. Just because a blog is random doesn't mean its untrue.
It can be, but that's hard to correctly judge on at scale.