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.
To me it's a good thing for the long run, not long after the beta testings of the game valve have rolled out a new updates over and over and one of those most game breaking updates is the deagle accuracy when jumping (now nerfed)