These consumers prefer not to receive future promotional spam from the vendor. Many vendors sell email addresses to others proliferating spam. An unintended side effect of the accuracy provisions is that spam marketeers might be required to use accurate return addresses for commercial messages. This could aid in filtering and prosecution for violations of acceptable use policies. Privacy protections were present in earlier versions, but were removed in the final version.
Congressional staff indicate that privacy itself is too big an issue, to be decided at a later time.
Consumer and privacy advocates should oppose final adoption of this Act. Other countries have better protections, and are easily reachable on the Internet. A reporter for CNet wrote a story on this bill before it passed and the story focused on 'digital signatures'. I wrote the reporter and pointed out that the bill dealt only with 'electronic signatures' which have nothing to do with cryptography. This is a pretty sad state of affairs.