The advantage of sharing the individuals' stories is not only for preventing scammers. Connecting with recipients would be hugely motivating for your donor base. DonorsChoose.org is an excellent example of an online charity that built a scalable feedback loop into its donation process (I ran marketing there for a few years). At DonorsChoose.org, donors fund teachers' projects, and then teachers submit pictures online of the project taking place in the classroom. It brings donors back over and over again.