Ease in use - it's intuitive! The service can be used as either web-based or desktop application (for both Mac OS X & Windows). It has been very easy for us so far using this software; we've only had one issue that was resolved within 2 hours via phone support from TeamViewer/Xeon Support team member who helped me through my problem right away without any hassle at all!! We have not found anything negative about its functionality yet but will continue working together until our needs are met 100%. This program helps streamline many aspects during campaign management by allowing you view your report data more easily than manually inputting each individual piece into Excel sheets etc., thus saving time which allows other tasks such like responding back faster due too less interruptions while doing them simultaneously. I love how quick they solve problems when needed most especially since their customer care center operates 24 hrs per day 7 days week including holidays. !