I like that it's easy for companies who are just starting out with their marketing efforts to use this service because of its ease-of-use and ability to track everything you need from one place! It also has great reports so if there was anything we needed help figuring out or tracking - we could easily find an answer in our dashboard area (which can be accessed through any computer).
Sometimes I would see something show up but not know what it meant until I went into my dash board later. But overall very helpful since all your stats will come together here instead of having many different sources. This makes managing campaigns much easier as well!