Don micropayments exert a large cognitive cost on users?
Using CentMail does not require making a decision every time you send an email about whether or not to donate a penny. In contrast, users make upfront donations (typically $5-$10) that often amount to enough stamps to last several months or even years. • Will demanding too much from a sender dampen the free flow of information? Could it even be viewed as a restriction of free speech? By analogy, postage stamps on paper mail are generally not considered an infringement on free speech. More to the point, CentMail is coercion-free. Senders choose to attach stamps proving they made charitable donations and recipients choose to read those messages based on any criteria they like, including potentially the existence of a stamp. See also Question 26. • Does forwarded mail need to be restamped? If the message is remailed, then a new stamp is required since the sender’s address is included in the message hash. On the other hand, if the message is bounced (i.e., the header — including the sende
