The Moonlight butterfly shield used to the most gamebreaking piece of equipment in the game. You shouldve saw the looks on peoples faces when it was nerfed to hell xD
Crystal Ring Shield nerfed! - Dark Souls Message Board for PlayStation 3 - GameFAQs

And yeah, invading really takes you out of your comfort zone at first. I'm still not comfortable with it honestly. And those clever gankers
At least they taught you something through all of those beatdowns right?