MtGox trade bot
Back when the MtGox exchange was active and volatile I used to trade Bitcoins. Out of curiosity I made a script which would buy at a target price and then sell at certain percentage higher price. It would then buy again once the price fell that percentage and repeat the process.
I used it a few times to make a small amount of bitcoins but eventually I found it was much more profitable to just buy and hold. In the end I easily made my initial investment back but I didn't retire a Bitcoin-millionaire.
My code can be found at https://github.com/colonoh/businesscat.Home