What qualifies as "nights hosted" for unlocking my Globe?

In order to unlock your membership Globe, you have to host another member for 5 nights or more. Host means to have another member at your home (whether or not you're home). This can be any type of exchange: simultaneous, non-simultaneous, non-reciprocal or hospitality. The important thing is that the member is staying at your home to qualify toward the count of days.