[DAnconia55]

Even a hardcore Libertarian could not object to anti-spam legislation that permitted anyone to send anything they want, but only if they identify unsolicited bulk mailings with a code in then header to enable filtering

I object.

Is your junk mail in your mailbox identified so?

[steve-b]

Is your junk mail in your mailbox identified so?

Indeed it is. Subsidy-rate junk mail stamps are obviously distinguishable from normal first-class ones.