A Wordpress plugin helped me reduce my bounce rate from 70% to 50%
I found the Nrelate related content plugin and it has been a great help. My bounce rate dropped to 50 and even though it was only been a couple of days, I think it has been a great help.
I selected the default style and it worked like a charm.
The plugin is free and below is the link.
WordPress › nrelate Related Content « WordPress Plugins
Hope it helps.
― George Carlin