This question gave me some insight into the world of "fuel dumping", the technique of booking an irrelevant fare to avoid or remove a fuel surcharge. The descriptions of it that I find on the web all seem to involve American airlines, so I was wondering whether this is a peculiarity of their booking and charge systems?
Australian fares tend to still have the fuel surcharge as significantly less than the base fare, for example, so I don't know if it would be worth it or even possible. The Middle Eastern airlines tend to have lower fuel surcharges as well. I don't know about Asian or European airlines.