I left the bot running for 20 hours, using the settings of woutie70. Here's the data of the last transaction and the accompanying chart. The initial $fake_btc_balance was set to 2.

*** Processing order...array ( 8 )
  ["type"]=> string(3) "ask"
  ["amount"]=> float(1.8646517758757)
  ["price"]=> string(9) "952.99500"
  ["datetime"]=> string(19) "2014-01-12 20:12:07"
  ["prem"]=> string(6) "profit"

http://i.imgur.com/ExkKsdm.png

The results are not very encouraging, but I'll do another overnight run with the default settings from github and see how it goes. intrd, please push the new chart code to the repo, as pChart isn't very legible after a few hours.