Hasn't changed my business. It was the best charting tool I've used since high school. I didn't realize how often I'd need to use them until I had no choice. Now it has completely replaced other tools I used. A lot of features are pretty basic and could use improvements, but the free version still works well enough. I wish there were more options for adding legends/axis lines etc., especially if you want something custom or unique - this one just doesn't offer as much flexibility as others do (I'm looking at you Highcharts). Also, it's very slow when dealing with large data sets so using a smaller dataset may cause performance issues too. But overall they're doing great work!