The Center for Media and Democracy unveils PR emails. Learn more about Syngenta's corporate spin on atrazine, the weed-killer in drinking water.

From SourceWatch

The use of personal experience to convince. By describing the successes or failures of ones own experience lends credability to the pitch. " I tried doing that exactly the way you did, but it didnt work because..." or " I followed this path and got this result..."

Use of the testimonial is common in Evangelical Christianity, commercial advertising, advocacy advertising.