Robots.txt: Similar to a stoplight, a robots.txt file supplies search engine spiders or crawlers direction. You’ll use this file to allow spiders to crawl your internet site. You may also use it to stop them from viewing URLs like your paid landing webpages. But how do you make this occur? https://www.youtube.com/channel/UCXpL4OXSmktqlP6_S5p5jIQ