I work for a company that has tens of thousands of customers who buy and enjoy our products. We are the top in our field and as such we have people who love to hate us for no other reason than the fact that we are the best. People write nasty stuff about us every day, but you can't spend all day arguing with internet haters, all they do is bring you down to their level.
Make a good product and let the product and your customer service speak for themselves.