Poor airline conduct or knee-cap saving relief? You decide
It's not entirely sporting behaviour, but for those of us superior beings with longer legs, those who want to work on a laptop or, heaven forbid eat our airline meal, it's a quick on-board hack to bear in mind.
All it requires is one water bottle, and the stones to ignore the cabin crew when the passenger in front complains his seat doesn't work properly:
Another reader on LifeHacker has an even more ingenious suggestion to protect your personal space:
I discovered that a rubber door wedge did a perfect job of blocking the recline feature on most United seats. Another benefit - it was nearly invisible to the flight attendant. I felt no guilt in doing this. Having a seat back or tray jammed in your space on a long flight is terrible.
Alternatively, airlines could simply remove all the seating and make passengers stand. They could get far more in that way, see.