This means you can now make queries about your real-time data and use that information in whatever way you please. One of the immediate use cases is to manage the content on your webpage. For example, you can query the API for the top visited URLs to construct a top trending content widget with the number of active readers. A site can also use what I call the “web counter 2.0”, meaning to display the active visitor count in real-time. Seeing the number of visitors also viewing a piece of content has a number of subtle effects such as creating a sense of community and credibility. Google Real Time Analytics API (Closed Beta) [analytics.blogspot.com]
We are releasing the real-time reporting API in a closed beta and there will not be an SLA enforced against the data.