Using Negative keywords are a great way to get rid of unwanted or non-targeted traffic coming to click on your PPC ads. But you always seem to attract clicks even through you have done your homework of generating a list of negative keywords for the campaign.
In Business, its always about sales and costs. If you can bring in more sales or lower the costs, then you will have a greater profit. That is the success in business, and it goes the same to Adwords as well. But how to generate targeted traffic and at the same time letting the un-targeted traffic not click on the PPC ads?