While PLU uses Globes to facilitate non-reciprocal exchanges, the website mostly promotes reciprocal exchange, either simultaneous or non-simultaneous. The number of Globes in the system is kept in balance to ensure that reciprocal exchanges are most commonly used but also to ensure that the value of a Globe is retained through scarcity. Globes can be earned by hosting a member who has one. If the person wanting to stay does not have one, consider instead offering an open-ended non-simultaneous exchange and stay at their place in future.