Marketers can make a ton of paid-search campaign mistakes. John Lynch points to 10 mistakes and provides insight on what to do to correct the blunders. The list takes us through a variety of issues, focusing on what happens when marketers don't do something they should, such as not using geographical targeting or not using site exclusions. For example, Lynch explains that site exclusions remove high-click, low-yield partner sites from the display network. Removing them can save marketers thousands in wasted ad dollars.