I noticed a recent spam flag on an answer that led me to the question "Programmatically convert a video to FLV", which had many spam answers (that will probably be deleted by the time you read this). Several of the spammers also targeted a number of other questions that were related to video conversion with their "answers".
Are there other topics on Stack Overflow that draw a disproportionate amount of spam answers? Could we use this information to monitor certain questions as honeypots for product spammers?