Nice. I too just learned of wildspark and synereo. Made a post on those a couple days ago. Feels like those too are somewhat difficult to earn crypto as they both start off members basically at zero crypto. Not like steemit where I got a few SP delegated to me when I first started.
https://steemit.com/synereo/@mawit07/social-newtorks-earning-crypto-beyond-steemit

Kucoin is cool too as it is a passive income. There is Coss and BCO too. So you nice stuff.
Thanks for the comment.