You did your research before going into business, so you know that incorporation protects your personal assets if your business is sued. A corporate officer is not personally liable for the actions of the business, and that is one major reason to incorporate.
This protection is called the corporate veil. But there are situations in which this veil is lifted, or pierced, and liability can attach to individuals. Let's look at examples, as described in the San Francisco Chronicle, of things to avoid doing and not doing so that you stay personally protected.