Your reasoning of readers don t use it is not true That s why in all cases it gets more hits by orders of magnitude more It s really necessary to distinguish between the ayin and the hamza and if you want to use the apostrophe for both then it s not correct It s either ayin hamza or ayin hamza anything else is sloppy Without the H the ta marbuta is ignored and it s another example of sloppy writing We already had this argument on Fatima Zahra and you won based on google hits I m really not sure why you oppose using the H Should we RFC this 20px Talk