Balmung or bust!
Also, as a guild master, you have to make sure new members feel like they're being actively included and are a part of the family. This can be somewhat problematic when you already have a somewhat insular group of friends already- they end up being the odd person out and that can drive them to leave if it's bad enough. Getting an "exit interview" when someone leaves is also not a bad idea- granted, they may not respond, but you lose nothing for trying.
Also, as a guild master, you have to make sure new members feel like they're being actively included and are a part of the family. This can be somewhat problematic when you already have a somewhat insular group of friends already- they end up being the odd person out and that can drive them to leave if it's bad enough. Getting an "exit interview" when someone leaves is also not a bad idea- granted, they may not respond, but you lose nothing for trying.