Edit your robots.txt from within WordPress to control search engine activities.
All well-behaved robots (which includes all search engine spiders) will request http://example.com/robots.txt before doing anything else. If you wish to allow all robots access to your entire site, then you do not need this plugin.
You need robots.txt (and therefore this plugin) to achieve any of the following goals:
You may ask questions by posting a comment to the KB Robots.txt plugin page. (If you post your support questions as comments below, I probably won't see them.)