The fact that we can use our own domain names makes it so easy to integrate into our website. We love how simple it is to create profiles for each of our users. It's also great being able to connect them all together in one place via groups. Nothing much yet! I wish there was more functionality in group management/communication but this should come later as they continue to develop their product. If you want an easy way to add user-profiles without having to manage accounts yourself then definitely give Whispli a try. We are using it to keep track of who has signed up for training courses with us (which reduces admin time) and who needs reminders about upcoming meetings etc.