Source Vitality

The top sources' share of total sessions is plotted on a donut chart; overall bounce rate sits at the chart's center and a loyalty indicator (returning-users share) sits below the card. Clicking a segment updates both figures to that source.

Imagine you want to know which traffic source actually brings loyal, quality users, not just a big number; click any donut segment to see that specific source's bounce rate and loyalty. An outsized share held by one source triggers a channel-dependency warning — meaning if that source dries up, you lose a large chunk of your traffic.