Here comes a private question. Ever had a PPC campaign that was just losing cash and you might not spin it round to start to make profit regardless of what you tried? That is a problem that most of net marketers face and very few basically manage to solve the problem. However a number of them do and there is a lot to digest from it if you only get an opportunity. Black Belt Live Case Study is something that made through the war with Adwords and was well documented. In this example you see a real campaign that was losing money but was tweaked to begin to make profit. Needless to say, there is a lot to assimilate from it. So if you're struggling with PPC and Adwords, you might want to take a look at this worked example for you don't frequently get to see something like this.
There's an axiom that it is important to profit from your mistakes but even more so to learn from the mistakes and success of others. That especially stands true in PPC where everything costs you money.