I somewhat agree. Theoretically a 10mhash CPU could generate 0.35 BTC over the next month if the difficulty stayed stagnant. It won't, but still that is a great way to distribute small amounts of currency to new interested users. Sure, flash a warning perhaps that it might deplete their CPUs lifespan and increase their electrical bill... but don't restrict them from the possibility that was once there. A lot of people don't want to have to install more than 1 program in the course of a their days. One is more than enough to frustrate many of my friends.