Is it illegal to give away money to followers?

What if I said I would give 1 ETH to a randomly chosen follower this Friday? 

Screw it, let's do it. I'm gonna give someone 1 ETH on Friday. 

Only rule: Must Recast this post with what you'd do with the ETH

If chosen, I'd evenly distribute the ETH amongst everyone who recasts this post

Now that's Ponzi-nomics if I've ever seen em

I don't know about you, but I'm here for the Sufficiently Decentralized Social Network 😆

even more confused... i thought people were here to make money out of air