Have a WordPress SEO question. From what I understand, WordPress creates a virtual robots.txt file. Does this mean I don't have to worry about uploading a robots.txt file to my directory to help my SEO? I've run my site thru SEO performance tests and they always come up that my site doesn't have a robots.txt.
Should I manually upload one? If so, please let me know what code needs to be included or point me to a reference site.