If your site's bounce rate is higher than you'd like, you can find out why users are leaving your site by doing some user testing. UserBob provides the most affordable remote user testing service where you can ask users to do something on your site while they record their visit and discuss what they like and don't like about your site. The normal rate is $1 per user per requested minute. So for $10 you could have five users try out your site for a couple of minutes each. Then watch the recorded videos and decide on what needs changing. Keep iterating and testing to get the lowest bounce rate possible.