> <i>Well, so what right? Google Forms will dump your data into a spreadsheet, SurveyMonkey can export to csv, but the data in Exversion Burners can be accessed via API just as easily as any other dataset. Which means you can program on top of them.</i><p>...and you can't program on top of Google Sheets or a CSV?<p>It's very unlikely for an ad hoc survey to generate enough responses for something in which ad hoc analysis would not be sufficient.<p>> <i>There is no comparable system that allows anonymous users to change their responses after they've clicked the submit button.</i><p>I don't believe anyone would actually do that.