- They should be less than about 300 visible characters long.
- They can contain links and basic styling.
- A random forum user reading a random factoid should have a good chance of thinking that it was interesting, funny, or useful.
But for me it would be better if the factoid will not sounds as an ad. Like eureka, facts and studies, maybe like...
"Did you know that America's electronics use more energy than Bitcoin. For more facts about Bitcoin Proof of Work mining check Bitcoincleanup.com"
Or same in the BPIP factoids format.
"Did you know that Bitcoin Proof of Work Mining is actually **Good for the environment?"
"Did you know that Most of Bitcoin PoW environment myths are not true?"
Well, that just for me though, most of the quoted above are taken from the website btw...