Actually, this is an experiment to create a faucet for Steem. Many blockchains including Bitcoin offered faucet in the beginning for wide spread adoption. By making more people to own steem should play as a carrot to make them stay in steem. And then, they should be adding more value to the chain by authoring valuable posts.

Well, there's still a homework on how to avoid abusive behavior as posting key is basically opened to public but I just let it start anyway. I'm interested to see where this goes.