A live traffic feed allows you to track your visitors by showing which countries they are originating from and which pages they have viewed. Apart from this, it also acts as a mini web analytics since it displays words and phrases visitors are using to arrive to your site. One reason why I like using live traffic feed is because it is very easy to access. I do not need to login and I can immediately find out the source of all my last 50 visitors by clicking on real time view.