I have a 19 twink, and as you know that bracket is pretty competitive.
Almost every bg I join, half of my team is under level 15.
I came up with an awesome way to kick em out.
Its simple, before the bg starts, type /e has reported you AFK. Type /afk to cancel
All the other players will see this:
YOURNAMEHERE has reported you AFK. Type /afk to cancel.
Get your mouse ready and report report report.
Its priceless seeing half the team dissapear
Have fun!