It is interesting to read the results of research, and it's interesting to see how researchers give incentives to people to participate in their research. Michelle (Tips: Survey) made two hypotheses: One that chocolate would persuade people to take her survey, and two that men would like Snickers while women would like Crunch. That might be another interesting piece of research: How gender preferences are reflected in candy choice and what types of incentives work best for getting people to take one's survey.