I doubt this will catch on. What's the incentive for the software companies to add it? I like the `source do-not-track.sh` idea better which defines a bunch of

I doubt this will catch on. What's the incentive for the software companies to add it? I like the `source do-not-track.sh` idea better which defines a bunch of `WHATEVER_NO_TRACK := 1` variables. It could even modify config files for software that doesn't use environment variables. Or even better yet, just use a /etc/hosts file or a custom firewall.