Riot Games has just now posted an update on the state of competitive play in League of Legends – and is considering removing Duo Queue from the game.
At the moment, Duo Queue allows two players to play ranked together, so long as they are near to one another’s rank. For example, Gold elo players can queue up with Silver and Platinum-ranked players. To compensate, it seems queueing up as a pair will match you against slightly tougher opposition than if you queue up alone.