I day trade. TD*Ameritrade won't let you do it without certain restrictions but Sharebuilder will. Currently building my way up but I'd say I average $100-$150/day. I just pick high fluctuating stocks like XJT. With a lower $$$ amount a nickel means decent movement and usually happens a few times a day. Buy 1.5% low and set a sell at 1.5% high. After over 80 trades I've lost only on one at $6.93.
Of course it has it's gambles. I'm young, unmarried, no kids, so I'm more willing to take the risk. Figured I'd go 110% at it so I'll either come out real well or real bad in the near future. Bought a bunch of google