What do you like best?
Way less painful than using Facebook's native management tools. Allows quick and easy ad generation without a lot of the technical headaches when dealing with the FB platform.
What do you dislike?
Not sure I would turn over most of my inventory to this algorithm because Facebook is already pretty tricky. Specifically for the Direct Response advertisers out there, you will probably like the Nanigans platform better than Power Editor or FB Ads Manager, but I'm not sure it will make you more money.
Recommendations to others considering the product
Nanigans is a great product. I would definitely use it if it had a few more "manual" options for Direct Response advertisers that don't want to let go of all control.
What business problems are you solving with the product? What benefits have you realized?
Probably better suited to a branding agency than a Direct Response user.
This helped my buyers upload and edit ads very quickly. Supposedly, the "Best" feature of Nanigans is arguably to help your best ads run as much as possible. But what Nanigans thinks is a good ad is not always a good ad by my own metrics, so we ended up trying to fight the algorithm more than anything else.