Ok Google, please ignore this free tax filing code so we can keep on screwing America
Found on The Register on Saturday, 27 April 2019
The United States' tax-filing software industry actively prevents search engines from discovering their free-filing versions, it has been discovered, adding further criticism to an industry that drives Americans toward unnecessary paid-for products.
It is, of course the robots.txt file that is used by webmasters to indicate where it doesn't want search engine robots to look. Typically this is used to stop search engines from accidentally gathering confidential information.
If you use the robots.txt to protect confidential information, you should be fired on the spot.