Here is something I was looking at from last Wednesday... SUNW was on a run... I was looking at the bid and ask action and the time and sales action to see if 14 could be broken... if it couldn't be, that would be a set-up for a scalp short. As you can see from a historical chart, you could have pretty calmly accumulated a 50cent-75cent profit. Using Level2, risk would be no more than 10-15cents. With upto 4 trades on simultaneosly (in my case), Level2 allows you to get out of the dogs and ride the stars with ease.
[To view it you will need Windows Media Player - comes pre-packaged with your computer usually - you will also need a zip program, although more recent platforms may automatically unzip]