It was easy to use, and I liked that it allowed me to customize my charts from what data points I wanted included. I didn't like how I had to use a specific name for each series/data point in order for them to be able to be selected individually. For instance, if I created a line graph with a title called 'Number of visitors per month' then when I click on any of those lines it would only allow me to select all of the months at once. If I needed to have multiple series with different titles (i.e. monthly, weekly, daily) then I would need to go back into each series and rename them so that they were unique. This could have been fixed by just having one title and adding additional series under it. Also, sometimes there would be a lag between clicking on one of these graphs and seeing the data update. Overall though, this.