Several comments have likened this to the war against spam, but it seems to me that potentially we are winning the e-mail spam war. It used to be dire. I have used hundreds of throw-away email addresses and many made it on to 'useful' lists of e-mails for spammers.
These days (everything forwards to gmail) I get about one or two spam messages a week in my inbox, and about 30-40 a day in my spam box. False positives (good stuff in spam) about one a month. That's a pretty good hit rate.
So if we can get the same results with killing tracking I'll be happy.