some options to curtail or eliminate domain tasting.
Please consider offering a choice of a substantial, nonrefundable fee to ICANN or similar for "instant" domain activations or a smaller nonrefundable fee for activation after a waiting period. Either way, any activation, mistaken or not, should bear at least some nonrefundable cost. Perhaps as small as $1.00 or so for activations with a waiting period. Probably $100.00 or more for "instant" activations.