Well, it's kinda like Instagram, you can just post photos and stories there. People will upvote your content and you will receive tokens in return. 

I've been using the app for a couple of weeks now, occasionally posting a couple of pictures and I've earned about 2 Mithril, which isn't that much. 

1 Mithril is worth around 0.28 USD and you're able to exchange it on Bithumb & OKEx.