Play games
Choose the game that interests you and play itfor free.
Complete the quests
Every game has some quests 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.
If they can't, then why not? It always helps to know why your article has been rejected 6 times in a row even though you make improvements everytime, but you have no idea what to improve.
If they can, then why the he|| does no one do it. If you dislike an article enough to vote against it than you dislike it enough to tell the author why.