My HILARIOUS demo of how broker market makers skim retail forex traders with high frequency trading aka HFT
http://quantlabs.net/blog/2014/04/my-simple-funny-demo-of-how-market-makers-are-skimming-those-poor-forex-trader-fish-suckers-with-hft-machine-guns/
http://quantlabs.net/blog/2014/04/the-amazing-dirty-little-secret-hft-market-makers-are-skimming-uninformed-forex-traders/