I like that it has an integrated calendar system with Google Calendar, allowing me to have all my events in one place! It also allows for reminders via email or text message which helps keep track of when things are scheduled during our busy days at work. Sometimes there can be lag time between sending messages from your phone/computer directly through their website so sometimes we don't get alerts about changes made by others until after they've been sent out again (or not even then). If someone sends something without using "Send" button within Facebook Messenger app itself this information does NOT show up in online contact list unless manually added afterwards- but if its done outside FB messenger than everything works as expected. We use it primarily internally because everyone here uses facebook messaging already however since most people do send texts instead of calling each other these systems help us coordinate meetings more efficiently.