5 benefits of PPC :
1)Speed to market
2)Reach
3)Highly targeted website traffic
4)Testing Capabilities
5)Maximize the return on your marketing investment
For all pageviews to the page, Exit Rate is the percentage that were the last in the session.
For all sessions that start with the page, Bounce Rate is the percentage that were the only one of the session.
Duplicate content exists when there is more than one version of a page indexed by the search engines. Where there are multiple versions of a page indexed, it’s difficult for search engines to decide what page to show for a relevant search query.