Your account gets DKP over time

One rule many players are not aware of is that your account does gain DKP over time. Every account gains 50 DKP every 15 minutes in its Time Trust. However, this DKP does not go to your Cash balance or count towards your ranking immediately. It will sit in your Time Trust until you spend it. Your Time Trust is capped at 5,000 DKP so you must spend it at that point or your Time Trust will no longer grow. This has been added to the FAQ.