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.
Greetings! Well, the essence of my suggestion is reflected in the name of the thread. Sometimes such a feature is really missing.
I will also cite an example of the issue that I noticed on IOS: I sould somewhy apply to join the "Looking for a Team" forum in the hope that I could create a thread there; but after that I could not write messages there from my mobile. A bit strange implementation though :) Having the ability to cancel my request of joining the forum would be great in such case.
Thanks and have a nice day!