personally I wouldn't want a computer making trades for me.. I much rather make my own decisions... I like to simply trading, so I do set alerts and wait for the chart to tell me thats its a good time to buy. But when it comes to pulling the trigger, thats me.
I understand the desire to make a program that would just generate money, and while it seems fine to let a program run with perhaps $500 in capital and see how it does, what happens when your account is $100,000 or $500,000? would you let a program buy and sell for you then?