QUOTE(drefira @ Jul 10 2012, 06:37 AM)
Robots.txt is a file through which you can guide search engines to crawl or not to crawl certain sections of your website.
Robots.txt is a text file you put on your site to tell search robots which pages you would like them not to visit. It is important to clarify that robots.txt is not a way from preventing search engines from crawling your site.
Robot.txt is a txt file. It tells the search engine which file is to be ingnored.