I like that it can be used from anywhere in the world as long as there is internet access. It also has an Android app! The lack of mobile apps for iOS devices. This makes it difficult to use from places without internet. In addition, I think that the price could be reduced if the service would include some free features. Also, sometimes when I try to add a record through the website, it does not appear in my list of records, so I have to refresh the page which takes a few seconds. My goal was to find ships near my location while doing research for a project. I like that it is easy for me as an individual user or in small groups of people using this app/website together with other apps such us google earth etc; we can easily check if our boat has arrived at port safely without having physical contact! And also helps finding routes from one point (port)to another so i dont have much problems when trying find my way around town ;-).