Broker_GuildMoney shows how much guild revenue you generate, provided your guild has the Cash Flow perk (level 5 and 16).
The LDB text updates to show how much you generated today, and the tooltip shows totals for session, today, yesterday, this week, this month, and all time total.
The project screenshot shows B:GM displayed through the Blockoland LDB display addon, but please note that there are dozens of different display addons for LDB brokers out there, including ones like Barrel, NinjaPanel, Bazooka, and so forth.
Remember to file a ticket if you find a problem or want to request a feature. If you want to help translate Broker_GuildMoney, you need to do so in the Lua file for the moment. I will convert to the wowace.com localization system when I am closer to finished with the UI.