Letters

Eric Allman, the Curmudgeon author of “The Economics of Spam” (ACM Queue 1(9), December/January 2003-2004), has it just about right regarding why we are deluged in spam: it costs no more for a sender to put out a million messages than one. Given recent statistics (spam allegedly passed 50 percent of all e-mail traffic some time ago), I suspect that the time isn’t too far off before some of the “sender pays” approaches start to happen.