Galagiveaways is the new giveaway website from IndieGala, where users can host and enter giveaways for Steam games.
To use the site, players must have a public Steam profile and a total value of games above $50, and must log in to the site with their Steam account. Players are awarded a number of Giveaway Points based on the value of games owned, plus 2500 for registering: more Giveaway Points can be earned by hosting Giveaways, and in the future, through exchanging the loyalty points earned when buying IndieGala bundles.
Points are used to purchase entry to a Giveaway, rather like buying raffle tickets; winners are selected at random from all entries received when the giveaway is closed.
More information can be found on the Galagiveaways FAQ.