The listing, Free Games: Game Miner Invite Key has ended.
Game miner is a web site where you get free (normally payed for) games for your PC. People from different areas of the world buy the games and post them to the site in exchange for 'coal' or 'gold'. Coal is a regenerating resource gold is an earned element. You would normally need over 100-200$ on your steam account but with the code given to you by me you can have any amount. If you believe in anyway that this site is fake go to game miner.net