Recently we wrote an article: "http://www.ibcscorp.com/work/how-to-write-a-testimonial/".
As a follow up to that we wanted to provide a template.
The template for writing a testimonial is quite simple:
Who, What, Benefit, signature.
"iBCScorp helped primeagile.com build traffic through SEO and helped us communicate our companies services better to its clients. As a result our business has grown"
You can find more example testimonials here: http://www.ibcscorp.com/web-marketing/sample-testimonials/
here is an example letter to request a testimonial:
Recently we worked with PrimeAgile to help your business focus its marketing efforts on your products and services. Specifically your internationalized CMS tools, CMS workflow and your certifiable SEO Toollkit. I would appreciate it if you could in turn help us out by providing your testimonial about our services. We will place the testimonial on our website along with an article about your company and its services and a link to your company.
If you are particularly busy just now as most of us are, please let me know what we did right and I will write it for you and send it along for your review.