STUDIES AND STATISTICS
(July 16, 2009)
Nearly one-third of 800 people surveyed by the Messaging Anti-Abuse
Working Group (MAAWG) said they had responded to messages that were
probably spam. While some of the people clicked on links by accident or
even out of curiosity, twelve percent of those surveyed said they had
responded because they were genuinely interested in the product or
service advertised. Eight percent of the respondents said they did not
believe it was likely that their computers would be infected with malware and recruited for use in sending spam.
More........
http://www.theregister.co.uk/2009/07/16/spam_response_survey/