Until "no-shows" are eradicated from the face of the earth, the vast majority of airlines will oversell. Yeah I know, WS doesn't.

On an overbooked BCN/YYZ flight this Summer due to a mechanical the previous day, a family of five took EUR4000 (800/head) in denied boarding compensation and were alternatively routed home through FRA. It was as though they had won the national lottery - they were doing the happy dance.