I use this module and plugin combination often, on both my own websites and clients websites. Here's why.
You can have testimonials appearing at the top of your pages, at the bottom, and elsewhere. Even better, if you have a few testimonials, a different testimonial can appear on page refresh.
On a previous website, after installing a tasty monials module at the top of the page, I just made a second copy of the tasty monials module, and installed it at the bottom of the page. Worked fine without any problems. That way, visitors to the website would most likely see at least one of the genuine testimonials provided.
And of course, all those additional relevant keywords and key phrases won't do any harm to your website SEO.
As for configuration, there are nice easy to follow install instructions and tutorials at the supplier website, plus help discussion forums, and if you sign up as a member, you can get reliable one-to-one help.
Previously, I've use AcaJoom, another similar product by Joobi. The good experience I had with that led me to jNews which seemed a slightly better fit for what we had in mind.
Without doubt, jNews is a great choice for sending newsletters and managing autoresponders, both from within your website.
Install is easy, configuration options are many and varied, plus there is lots of support help on the supplier website.
In fact, with AJAX Scroller I was amazed at the range of options available!
It works "out of the box", yet if questions or queries arise, sakic.net must be one of the most helpful resources around. I don't know how they manage that but long may it continue. Definitely truly worthy of 5 Stars.