Play games
Choose the game that interests you and play itfor free.
Complete the tasks
Every game has some tasks for which you will receive Soul Gems.
Receive rewards
You can exchange your Soul Gems for Steam Wallet top-ups, game keys, CS:GO Skins and other rewards.
I did an article on "Piano Tiles 2" and I was rejected by users for "plagiarism/spam" even though I was the FIRST ONE to do it, I wrote it MYSELF and I don't see HOW it could be SPAM.