Newsletter/testimonial: Somewhere sends periodical job offers into my inbox. To finish the newsletter off, there’s an actual success story.

Tweet testimonials: testimonials communicated over Twitter are often being displayed on landing pages these days (they are openly accessible and therefore probably legit). What to do when there are none yet, but you’d like to get some? Announce it, leave the space. 

Show praise/testimonials/awards: @Banjo shows the fact that they’ve won an award “app of the week”. However, not sure why the WHO/WHERE is missing.  

Testimonials: Silverback (@silverbackapp) places the testimonials where people look first: Top left coming right from the mascot’s mouth.  

Smiling faces/testimonials: 37signals (@37signals) did some A/B testing with their product landing page for Highrise and a nice post about the results they’ve found: Smiling faces and testimonials work.

Notice how reloading the page brings you another person/testimonial.  Would be interesting to see how conversions looked if you could serve the images according to the viewers gender.

Testimonials: Apiary (@apiaryio) uses testimonials at the top of their landing page. They resemble award winning movie titles and in the middle there’s a human voice reminding readers of the usefulness of the product.

“Black hat” testimonials: Wimdu, a clone of Airbnb, used a concept featured on area in the footer of the site (when actually the concept probably was Airbnb).