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

Recasting for a chance to win 1 ETH! 🧩 

If I win, I’d use it to further develop a Web3 project aimed at transforming how businesses and individuals connect and collaborate globally. 

On a mission to build a future with more accessible opportunities! #Web3 #DAO #BizDev