The ease with which I can set up my pingplotter account was great! From setting up an API key (which had me stumped for about 30 minutes) to getting started quickly with creating graphs and seeing if there are any problems/issues at all from our end-users' perspective - everything worked as expected without issue.
There isn't much one could complain about here really except maybe their pricing structure might be better suited toward those who use this product regularly rather than just occasionally. We've been able to see issues such as slow page load times during high traffic periods within seconds instead of waiting hours like we used to do before using pings plots.