How do I know which content is popular? Where do I find it?

You can find content which is organized in the order of it's popularity when you click on the Shares tab.

The Sharein Popularity Index indicates the momentum of sharing. An unbiased algorithm which is based on actual user activities is used. This truly reflects the activities of what people are sharing and resharing. Once a share has earned a critical mass of shares and reshares, it becomes “popular”. It will then appear at the top of the list of popular content. Use the Popularity Index to help you browse through the hot topics of the day and it will quickly lead you to view them.