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

I would use it towards an oxygen machine for my mom. She has COPD and only 14% functionality of her lungs and seriously needs one.

✅ 2 200 tipped ∙ 280 remaining

2 200 / 2 480 (89%)
🟧🟧🟧🟧🟧🟧🟧🟧🟧⬜

Building Higher apparel at High Line 🧢 
Host at /clickcast /cpg || Husband to @shiwen