QUAKE LIVE is a new and innovative multiplayer game experience from id Software - the creators of DOOM, WOLFENSTEIN and QUAKE - that offers players of all skill levels an easily accessible multiplayer game and community through a single website. The game can be played totally free, though there are paid subscriptions with even more features and play modes available. For more details on the great additional features of a paid subscription, please follow this link. Every element of the QUAKE LIVE experience, from finding and playing games to post match stats review and social networking are delivered through a single state-of-the-art website.
Source: The Publisher Website.