I like mav's five points.

I see a factoid as being a single, briefly expressed fact that, although interesting or surprising, is usually of so little import that it isn’t worth checking whether or not it is accurate, you just accept it (or not).

So, it is small, in the sense of brief, it is presented and accepted as a fact and often has an element of Ripley about it.

Not sure who I’m agreeing with here (if anyone ).


Edit: Hi hk, and welcome.