I like that it's easy to set up my trial version of their product so i can see how well they work with our plugins before we decide if its worth buying or not - which helps us save time! It also makes sense from an SEO perspective as you're getting free content in your website (blog posts) rather than just links coming through Google Analytics etc..
We have only had positive feedback when using this software but nothing negative at all really other then maybe some minor bugs here & there? The support team are very helpful though once contact has been made via email/ticketing system everything gets sorted out quickly :) If anyone was looking into adding freemium functionality onto existing products please look no further because these guys will make sure every aspect works perfectly together without any issues whatsoever!! Our customers love being able use premium features while still having access too.