I have put about 1300 dollar to try this bot in the first of May, set the DISTANCT to 3%.

After have a trial of a month. I actually lost ~1 dollar USD (kept amount of btc equal to initial), of course after pay some fee to mtgox, so turn out no luck.

Then I've sightly modified to be adjustable ratio, I've set 80/20 btc/fiat and tested a week.
Still 1300 dollar, 3% distance and then have a better result, earned ~0.6 USD (again, kept amount of BTC equal to initial), annualized return would be 2.5%.

Earning is so little mainly because there are too few of pump and dump, but enhance the transaction volume are the key of success. I seldom check this post so I just know the cold wallet idea, I love it so much and will have a try with my 80/20.

Thanks for prof7bit again.

https://gist.github.com/idler921/5707557