Art: Interesting speculations. Persuasion researchers (Pratkanis in particular, if memory serves) argue that the mere repetition of a persuasion message leads to higher levels of persuasion. But they've also shown that certain features of messages and features of persuasion recipients' psychology have an impact on how they process and react to those messages. So, spam could well be more effective with some, but I suspect that, depending on the message, it could also have the effect of aversion therapy for others. It would seem, then, that a study of specific messages is really necessary. Preferably someone could do a naturalistic one--e.g., request access to some men's email "trash" files to determine their level of exposure to certain kinds of spam and then determine such things as their level of comfort with their size and/or their desire for bimbos. (I suppose you could simply ask subjects to recall the amount of exposure they've had to specific types of spam, but I suspect that many subjects would feel it is socially undesireable to admit getting these messages let alone remember how often one receives them, particularly since more than a few people out there seem to think that such spam is only, or more frequently, visited upon those who surf the web for porn.) --Christian Nelson