I like that it's easy to use, has amazing results when you do get them right (which is not always), and doesn't require too much effort from me if there are no issues with my data or formatting.
It can sometimes be difficult to understand where an issue lies within our documents so we have had some problems finding out what exactly needs fixing but this tool helps us identify those areas quickly without having to go through each section individually. The only thing i dislike about sentiment analysis tools such as these is they tend to give very specific answers rather than giving more general ideas which makes it hard to see how far away something might need improving. We've been able to find many different sections within our content that needed attention by using this software.