The Add on Deadly boss mods amongst other things in Warsong Gulch will show who’s carrying the flag for both sides.
How is this useful for a Priest? Well we have a talent Called Mindvision, with an unlimited range if I can click on the person/horse/ enemy I can see what they see.
You can also Skip from one Person to another. Eg See What A sees, then even if YOU can’t see person B but person A can click on Person B and Mindvision them, and so On..
Friend or foe.. Horse or Squirrel you can use Mindvision to Hop and Skip.. I’m not sure how many you can do in a row.. but I’ve skipped onwards of 6 times with no problems..
it can be useful to annoy people who always act silly in a city, or a Bg when they have been Mindvisioned…
How to use this in Warsong Gulch
You Can Mind Vision anyone of your side, and also since Deadly boss mods have kindly give you someone to click by identifying who is running round with your flag. You can select them and Mind Vision them to find out where they are.
Lose the flag carrier… and your not sure what Nook or cranny they have tried to hide themselves in at the base. Mindvision will find them!
Provided by 
Pugnacious Priest's Warcraft Blog 