I didn't see this in the searches, I hope I didn't just miss this. For some this is common sense, for others, well, a wake-up call to a higher purpose I hope. Not so much an exploit as using your skill for a greater good.
I for one got sick and tired of getting stuck with turtled AV's as an alliance, and decided to play on my paladin. I went to FWGY, and I kept guard. Anytime I saw any alliance try and touch that flag when RH wasn't capped, I bubbled their stupid butt.. Perhaps others would like to try to do the same. We won 13 games in a row due to non-noob-caps.