Piwik lets you view the traffic sent via search engines. Other than the hit count from each search engines you also get - bounce rate, actions and time spent by that user on your site. This is important information as you can see this will help you build much better website. Bounce rate is an indication is how your content is performing and what you need to do in order to make better conversions. Don’t take bounce rate too seriously in your analytics, your website niche and bounce rate has a relation. Each website should be treated differently when you analyze bounce rate.