With Whisper it's easy to create a post purchase survey to ask questions like `How did you hear about us?`.Once your survey is live, Whisper makes it easy to see which survey choices are selected most by customers to help you answer questions like `Which is my most successful marketing channel?`.Drill down in to more detail with interactive charts that show totals by choice, day or month. Easily edit your surveys at any time, hide choices, reorder them, change the text.