Ladder-based scalping system

[Iron]

Interesting looking Level 2 system: http://www.nobsdaytrading.com/about.html

The way the guy trades looks a lot like Betfair scalping, albeit slowed down:

http://www.nobsdaytrading.com/videos.html

Even if you're not interested in the system, I'd recommend his 'For inexperienced traders' and 'For experienced traders' sections. They contain some interesting observations about how markets work.

Jeff