Kern Lewis , president of small business marketing consultancy firm GrowthFocus , says marketers need to stop fretting about how little control they have over how messages spread in the viral, social media-driven world of Web 2.0. In reality, customer "have always been in charge" or how brands develop, he says, "the feedback loop is just a lot faster now." Customers can spread negative opinions about a product or company more quickly and widely than ever before, so brand managers need to know the digital turf better and they need to be quick. At Forbes.com , Lewis shares some advice at how to act on feedback. He says "be vigilant," "be active,' and "be honest": Given all the mud being slung at corporate America these days, honesty and clarity have never been more important. If you make a mistake, own up to it and demonstrate that you are taking steps to fix the problem once and for all. Remember: Giving customers what they paid for is nice. Demonstrating your commitment to quality and improvement will keep them coming back. And that's what building a strong brand, in any age, is all about. Read How to Maintain a Brand here .