GetCampaigns retrieves the totals for each campaign during a particular time period as well as a comparable time period immediately preceeding the one you requested, and will provide a result set for each time period. This cumulative data includes clicks, goals, cost per click, cost, revenue, profit, return on investment, cost per acquisition, conversion rate, and the SiteWit Engagement Index. The report also includes the number of visitors who were repeats, researchers, prospects, and fans.