Sport and Trad climbers alike should be well aware of the need to avoid back clipping quickdraws. Just in case you've forgotten, here's a quick reminder. The basic concept is to try and keep the rope running along the spine of the carabiner (correct clip shown right) when moving left or right of the placement, so that during a fall the rope will not be in danger of landing across the gate. This becomes more of an issue with bent gate carabiners and climbs that wander around rather than being straight...