What a great experience for long-form articles. I've purchased a few others and this remains top of my list. It allows for nice features, such as indexing your site and using that to add internal links. It can also build external linking, but I find it puts them in unnatural use cases as do follow links, so I would still prefer a human touch, though it's nice if you're in a time pinch. It offers keyword-researching abilities, though that is not what I use it for.
It creates a voice for your brand which is implemented very well. The articles are very well written and there are many other features I have yet to play with like YouTube to article writers, page rank booster, and a web page indexer (though this is typically included in any basic SEO tool).
As for what I use it for, writing first drafts, Junia gives a great starting point to what would normally require hours of research and writing. A nice interface allows you to really fine-tune the articles with specific prompts and article layout adjustments.
Five Tacos, for an excellent writing resource!