Standing Room Only

In an attempt to keep RyanAir in the headlines, RyanAir boss Michael O'Leary has announced that his airline are considering removing seats to offer cheap or even free standing room tickets on some flights. They have reportedly asked Boeing about the logistics of providing 'vertical seating' in their ne fleet of aircraft.
Apparently the small privately-owned Chinese airline 'Spring' have already started the ball rolling by working out they could pack an extra 40 or 50% extra passengers into planes with standing room. Having only 13 planes, Spring have been looking at ways to carry more passengers with their existing fleet.
Airbus have apparently been talking to airlines about offering this option, but obviously there will be some stringent safety guidelines to be met.