I'll give you an example from our perspective. In our FairPlay application, we took a look at the costs of blocking through domain name servers, which is a common method of blocking, and it's infrastructure that is installed on every ISP system today. The estimated cost to do a block of one site is something in the range of $18 to $36, whereas we spend two years—
On September 26th, 2018. See this statement in context.