Ahh, Iniquity, I've always loved the word, from when I was young, I didn't even know what it meant at the time, but it was odd.
I've been meaning to use it for a long time, though I've never found a good word to pair it with, as I find it to be used as an adjective.
Then again, I can't really say it works like this, but I like the ring it has, when using it as a Username, I just take the meaning of the word out of it,
And just leave it as a nice sounding word.