Wouldn’t that made up word show up on Google no matter where you posted it? I ask because if your paranoia is right that is something we better know for sure.
That might be true, but I have no other way of posting a made up word except FR. I don’t do FB, Twitter, Instagram or any social media at all. If you do, you can try it as well. Just make up a silly word or unique combination of letters and or numbers, then post it on that site, then immediately google it to see if it comes up...................