Bounce rate: Its one fantastic data from Google analytics that helps webmasters the most than any other data.
It is the % of visitors that simply leave your website without actually visiting any other page except the gateway page, the page where he landed, mostly the gateway page is the home page.
These % of visitors spend less than 5 seconds in your website and leave without visiting any other page.
When you run a PPC campaign like Adwords, You should be aware of the % not exceeding, Keep a tab on this % and make sure it gets improved with your campaign changes.
Surprisingly, this blog jaiganeshv.com has a 0% bounce rate until last week. Provide quality and unique content and you can achieve the 0% bounce rate. When your blog or website is not updated often and if it has outdated info. the visitor simply closes your site from its gateway page.
So update information very often, this is the best way to achieve 0% bounce rate
You can read my previous post what is Google Analytics and More on Google Analytics to get some good insight on Google Analytics.

