I've taken 13 sectors on AF and KLM in the last three weeks, 6 in business class, 5 in economy and 2 in AF's short haul premium economy. For the economy sectors I found myself in a aisle seat in the emergency exit row on each occasion without me even asking, or paying.
I'm a gold member on AF/KLMs frequent flyer scheme so, as F3G rightly suggests, this airline is taking care of it's frequent flyers.