I like that it is very simple to use and I am able to get a pretty good idea of how my organization is doing in terms of energy use, water usage, waste generation etc. It is not perfect and could definitely be improved. The customer support at GreenKPI was also a little slow at times. While they were always willing to help, sometimes it took a few days or even weeks before someone got back to us. This is a great tool if you are just getting started with your sustainability efforts. We were trying to figure out where we stood in comparison to our peers, and this gave us some good information about how we compared so far.