Hi, Yesterday, one of my friend asked this question. I have a website example.com, which is created using Drupal CMS with a sub domain blog "http://www.example.com/blog" which has Wordpress CMS. I would like to block few posts in "http://www.example.com/blog/examplepost/ from search engine index by using robots.txt file. I would like to know, should I have to use separate robots file for each CMS, ie, http://www.example.com/robots.txt file for Drupal and http://www.example.com/blog/robots.txt for Wordpress or will the main domain robots file(Drupal) will work for "http://www.example.com/robots.txt"(Wordpress). The same question applies for XML Sitemap.