I like that it allows me not only see my voicemails but also listen too them as well! It is very easy for people who are out in public or at work with their cell phone/ipad etc..to use this service without having any issues.
Sometimes there can be some delay when you call back if your number isn't saved yet so try calling again later after saving yourself from leaving an important message behind!! Make sure everyone knows how they need to save themselves before going off-line otherwise sometimes we have no way of knowing what was left unsaved (like our messages). This has helped us keep track of all incoming calls while away from home since most companies don’t allow outside phones access during business hours unless required by law enforcement.