I'm a big fan of Testimonial because 1) it is super easy to include all kinds of shoutouts (tweets, text, and video) on my websites and products and 2) Damon is a founder who is building in public with transparency.
You can visit the site using my affiliate link here to get 15% off your 1st year with Testimonial.
P.S. I will get a commission when you sign up via this link. This is a way to support my effort to create free content.