Guild Experience Pool comes up with the idea of sharing beneficial buff in entire guild while keeping it free. The buff is various, from single avatar bonus reputation, to entire guild exp bonus. For full detail, please take a look at Features detail part 6 which currently on page 19.
The pool filling as avatar gain exp even they already max level. Meaning everytime avatar doing something to gain exp like killing mob or finish quest, they contribute bonus to the pool. For full detail, please use [?] buttom in top right corner of GUI.
For now, the pool draining require purely exp. In future, added new effect may drain certain Alternative Currency like Relic of the Kingdom of Elements, or Anniversary Coin, but never require Gold or Crystal.
Several note about the pool:
Surely there is good chance that some player will selling the effect, for carry service example. Infinium does not forbidden those trading, and we have confident in our management skill that we will keep that in balance.
A small hint that player buy those service require leave guild, and their loyalty drop. As this value drop, the Potential Point mechanic tax heavily on them. So it's their choice.
We listen to community demand and added new effect to the pool as it possible and acceptable. For example, Water of Death will not be added as it is collide directly with Replica Service. Costume and Gold, and other thirsty item like Almagam will never be added.