Hey - I wonder what would happen if you went to Google Analytics Help and typed in 'Bounce Rate'? Something like this, I just bet, http://www.google.com/support/analytics/bin/answer.py?hl=en&answer=81986
It's actually a figure that indicates whether visitors that arrive at the landing page decides to navigate to other pages within the site as well. A high percentage means that more people just close the first page after arriving while a low percentage means that more visitors are visiting other pages other than the landing page itself.
A high bounce rate means that people don't find your site interesting and just leave after visiting the first page. A good way to fix this, is to make sure the landing page is interesting and makes the people want to explore your site
Thanks for your answer. I got it today. besides, I am interested in your name . what does the word "locos" mean ?