Free basic version allows 3 surveys and 3 summary reports, but multiple responses. Much prettier graphs (reports) and I would also say it is easier to use than my standby Surveymonkey. +++ for the wittiness of the comments that have been added by the designers. Has send to email feature when people respond to the survey.
Our users have written 1 comments and reviews about Wufoo, and it has gotten 17 likes