I like that it is very easy to use, has great features for call management (such as hold music) and allows you to customize your interface with widgets or other apps. You can also add multiple accounts through one app which makes things easier than having many separate ones. No real complaints here but there are some issues where if you have too much going in at once then sometimes they freeze up so be sure not to go crazy when adding them all! We needed an application we could easily manage our calls from without needing access to several different applications/websites.