http://www.speedsolving.com/wiki/index.php/EOLine
Orientating the edge will allow the cube to be solved using only R, U, L moves.
But EOline isn't really efficient in the fridrich method especially when you are using the cross.
Maybe you could orient a few specific edges during the cross.
But who knows, maybe there is a better way to use it.
I see no wrong in how I worded. I like doing ZZ, it's my main method for OH, and I practice an abnormal amount of 2h with it. Average like 16-17 with it 2H.