Project Go-live Date is the date that your project will start collecting statistics. Enter the beginning of your data collection period (e.g., 2005-12-25). By default, data is collected since you installed the tracking code. The Project Go-live Date allows you to eliminate the period for which you do not want any data to be displayed. The data you choose to eliminate from your reports is not lost. Note that the Traffic Summary report is not affected by the Project Go-live Date selector, and will display all the data collected for your project.