Lord of the Rings Online - Traits Overview @ Official Site

An overview of the traits system is available at the official Lord of the Rings Online site.

Acquiring and activating Traits is one of the most flexible methods for customizing your character in The Lord of the Rings Online^TM: Shadows of Angmar^TM. Simply put, Traits are new skills, bonuses, and other enhancements that benefit your character. There are four main categories of Traits: Virtue, Race, Class, and Legendary, which are earned by completing Deeds, quests, and other achievements during your adventures. Your Deed Log contains information about which of your current Accomplishment goals will reward you with a Trait.