The folks at BoingBoing are rightly angered by the trend in airports to feature pay-per-use electric charging stations. It’s bad enough that you’re stuck in the terminal, waiting for your delayed flight to finally start boarding, only to sit and wait some more while seated in 25B. Now, more and more airports are renting out their power sockets, so you can’t even recharge that laptop, cellphone, or DVD player while you’re killing time.