BlueAlien.org

Yesterday ArenaNet and NCSoft announced that GuildWars now has an official store which can be reached in game. Direct from the Press Release:

Players can now download Guild Wars games and accessories from right inside the game, and the digital distribution will enable this content to be used immediately, without the need for downloads or CD installation. The store is initially selling Guild Wars and Guild Wars FactionsTM games, as well as additional character slots, the item most-requested by Guild Wars players, which can now be purchased and immediately used on existing player accounts.

For more information see the official press release. Also to note last month they announced a second expansion for the series. Check out the Nightfall press release.