Before Robinize I've used several SEO content creating tools before and they are all expensive and difficult to use. With Robinize I've managed to get a cost/value ratio optimized, however I belive that there is still room to make the product be the most popular SEO content creating tool if the community supports it. Overall good product with high recommendations to use from my side.
I had the pleasure to try it out and it's an amazing product. Easy to use and visually appealing, a must have for any SEO professional. Makes it a lot easier to write content for SEO, or improve already existing content.