High donor-attrition rates (58.5 percent a year, according to the 2012 Fundraising Effectiveness Survey ReportOpens in a new window) force nonprofits to constantly recruit new donors. Fundraising economics have made online channels (Web, social, mobile) an important way, in their own right, to acquire and retain new donors across all demographic groups. And numerous studies have shown that donors who use both online and offline channels give more and are more loyal.