if make the smallest deposit is 100 dollar they know in the first time they don't have many trader in their system.More traders means more server troubles, because you need more better servers and things like this. I've observed this with very quick growing brokers, they were awesome in the beginning but then when the number of clients increased the execution got slower and poorer, bigger slippage and things like that.while other brokers will not even handle those small deals and they just desire couple of but gigantic deposit traders....