I love the private note feature as well, we can suggest solutions to specialists working on solving an issue before it is escalated. Something else I liked about FS is their asset management utility.
The integration with email is good, and we really like the mobile app as it gives us a far better ability to respond when away from the desk than email alerts.
The interface is extremely user friendly, ticket management is far superior to the system we were previously using and the support has been fantastic so far.
I placed 2 trouble tickets and I had my account suspended because I apparently was harassing them.
Difficult to note any dislikes on the application. Any issues we have are being considered for future upgrades.
Lack of Flexibiity to link with other products such as JIRA for example.