The ability to create custom forms that can be used across multiple applications, which is very useful for our clients when they are working with other providers. It's also pretty easy to pick up if you have some experience using WordPress or another CMS system like Joomla! or Drupal. There were no downsides but I do wish it would have been easier to set up my initial account so I didn't need to ask for assistance from support staff every time I needed something new installed. My client has had several problems in recent years where their data was mismanaged by someone who doesn't understand how things work (or at least isn't willing to learn). With Nano Notions we not only solved all of those issues but created an extra layer of security for them as well.