The other day, I wrote about this robot, called Dollar Bot.
It was designed to make quick trades and close when they reached just $1 of profit. It's back-tests weren't very good - it would make a little profit, then the market would make wide ranges, and well, it was bad.
I made a few small modifications to Dollar Bot (modified code not available) and put it on a demo account with two currency pairs, EURUSD and GBPUSD. Last week, it's up over $100 (although current draw-down is over $45).
It would be nice if back-tests were more reliable. Still, I expect that this test will eventually fail in a similar fashion shown by the back-testing.