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 Loffy wins 1 ETH, it’s going straight into launching a collection that makes social media a better place—one filled with love, kindness, and good vibes! 💛🌈 This isn’t just an NFT collection; it’s a movement to unite people who believe in spreading positivity and lifting each other up. The world needs more smiles, and Loffy is here to deliver.