The ease of installation, configuration & use are what I like best about this product! It's so easy to setup that even my non technical mom could do it for me without any issues at all! Once you have set up everything correctly (which is very simple) there really isn't much else needed outside of occasional maintenance or updates/upgrades from their team if something should go wrong after initial setup. We were able to monitor more than 20 websites within minutes of setting them up which was amazing especially compared to most other products we had tried previously. There wasn't anything negative mentioned by our customers as far as they can tell but one thing did come up - once they realized how quick and effortless it would be to get started using TM they wanted us to add multiple domains instead of just having 1 domain monitored only. So now each client gets added.