Keepers of the Tree (KoTT) is the name of the guild. And My name is Lira Flower in game.

Predictably, Wikipedia has lots of information about the game. I've excerpted a summary below:

Guild Wars 2 is a massively multiplayer online role-playing game (MMORPG). Set in the fantasy world of Tyria, the game follows the re-emergence of Destiny's Edge, a disbanded guild dedicated to fighting the Elder Dragons, a Lovecraftian species that has seized control of Tyria in the time since the original Guild Wars. It claims to be unique in the genre by featuring a storyline that is responsive to player actions, something which is common in single player role-playing games but rarely seen in multiplayer ones. As a sequel to Guild Wars, Guild Wars 2 features the same lack of subscription fees that distinguished its predecessor from other commercially developed online games of the time, though a purchase is still required to install the game.

The game's attracted high reviews from critics (typically above 90%), had sold over 2 million copies by January this year, and currently peaks at up to 400,000 simultaneous players. So it sounds as though if you're into MMORPGs, Guild Wars 2 is worth a try.