The ability to manage reservations for multiple sites in one place, it's easy to use with any device (mobile or computer). It also has an API that can be used by other applications like booking engines etc. I think there are some bugs when you try to edit your profile but nothing major so far. If you're looking into managing more than just campsites then this might not work well if they don't have good support. We needed something simple where we could add/edit our own info as opposed to using another service provider who would charge us per site added which was unnecessary at times. This allows all of us to keep track of everything within one platform rather than having separate accounts spread out over different websites.