BG Announcer
This WeakAura reports everyones current BG Queue in your Party, Raid, and Guild. (Each can be disabled in Custom Options)
The left side is the Bg, the right side is the number of people who have the same queue!
There is also an option to add the names of the players in each Queue, disabled by default in Custom Options
Custom Channel Macro
/script WeakAuras.ScanEvents("BGA_CUSTOM");