I like everything about this software! It is easy for new users or even seasoned marketers who are looking at it as an addition rather than replacing existing toolsets. This tool allows us to see what our customers want versus just giving them something they don't know we have in store yet. We can also do better targeting of content while being able to build out campaigns quicker with less manual work required by other platforms. Nothing really - but if there were some minor changes made here & there then things would be perfect!! No problems so far when using revtraxx's solution.