The Shopping Phase is the phase in which people start to do research.  They will spend time on the internet looking at reviews and comparing products and businesses.  In the shopping phase people are more actively aware of marketing messages for the product or service you are providing.  Often the shopping phase for your business can be predicted by trigger events specific to your industry.  If you would like to learn about how to best time your advertising to impact people by taking advantage of natural trigger events, click here.