How do clerics earn Star Wars Galaxies credits
Abyss Points, in general, are rewarded based in the damage dealt by a whole group. A Cleric will not gain any Abyss Points if he plays on his own and heals the members of a different group, but he will gain the same number of Abyss Points as his fellow group members receive when they fight other players or groups. He also gains the same amount of Abyss Points as anyone else would when dealing damage and successfully defeating opponents in one-on-one situations. The Medals distributed during fortress sieges are assigned based on Abyss Point ranking. One might rephrase the original question as: How do Clerics earn Medals? Medals can be used to buy items in the Abyss and are therefore quite valuable. Gold and Silver Medal rewards are given out to the top 100 players of a siege based on the amount of Abyss Points those players gained.
Star Wars Galaxies credits are essential for everyone to be able to participate in Abyss sieges and other more or less voluntary brawls. In Star Wars Galaxies, they always try to encourage what they feel is the foundation of MMO gaming: playing with friends and grouping.