How to avoid theme bleeding
• You must plan your navigation properly. Majority of webmasters recommend the use of a silo structure for your website wherein associated content is stacked together.
• You must utilize the nofollow attribute. You should add a nofollow attribute to pages which you do no want the search spiders to crawl.
• The most effective technique for preventing theme bleeding is using the robots.txt file. This file is a simple text file which sits on your server in the akin directory where your homepage exists. Using this file in links which do you do not want to be crawled will make sure that search spiders under any condition will not crawl these links.
I am sure after enlightening reading this post you know what is theme bleeding and how you can avoid it. So get going!!