You should listen to...

Seth Godin: The critics are never going to be happy with you, that's why they're critics. You might bore them by doing what they say... but that won't turn them into fans, it will merely encourage them to go criticize someone else.

It doesn't matter what Groucho or Elvis or Britney or any other one-name performer does or did... the critics won't be placated. Changing your act to make them happy is a fool's game.

Here's a surprising thought, though. You should ignore your fans as well.

Your fans don't want you to change, your fans want you to maintain the essence of what you bring them but add a laundry list of features. Your fans want lower prices and more contributions, bigger portions and more frequent deliveries.

So, who should you listen to?

Your sneezers.

You should listen to the people who tell the most people about you. Listen to the people who thrive on sharing your good works with others. If you delight these people, you grow.