Steam is a product from Valve, you can read its policy on the website: https://store.steampowered.com/privacy_agreement/
Steam is the program you need to join this wonderful gaming community, yes Steam is both the platform and the community. A very good application that keeps you up to date about games, events and more.
Steam is used as meeting point for millions of gamers all around the world and they play excellent online games on exclusive servers such as Call of Duty, Modern Warfare 2, Painkiller Overdose, Unreal, Dawn of War, Left 4 Dead,… The perfect place for your online gaming experience.
When you run Steam you will access an interface where you will see the latest news about games, new games and the latest updates, of course you will access exclusive demos, trials and special prices, it is amazing.
Some videogmaes for PC can be run only under Steam, that’s a good reason to install it.
If you are a gamer, Steam is a must have in your PC.