, a free Web site that helps people manage their money, launched a year and a half ago, and already has 900,000 users. The company is building its following by giving customers what they want.

When the site launched, users could track their checking, savings and credit card accounts. Before founder Aaron Patzer made his next move, he surveyed his clients. They wanted investment and loan services, so added tools to help them monitor the performance of their portfolios and the interest rates on their loans. Forty percent of them owned iPhones, prompting the company to roll out a special application for the device.

In these tough economic times, it's crucial that small businesses stay attuned to their clients' needs. Companies that fail to do that will be in the market for a "going out of business" sign. To stay out of the red, follow these rules:

Set goals: Before you talk to customers, identify what you want to learn. At the least, you should aim to find out your clients' service expectations so you can evaluate how well you meet them. Managing those assumptions is an important part of customer satisfaction, says Kesi Stribling, chief executive officer of KSG Strategic Consulting.

Survey away: People don't have time for a 10-page questionnaire, so keep it short and simple. Janine Popick, CEO of VerticalResponse, which distributes surveys on behalf of other companies, says that surveys should offer an area for respondents to make suggestions.

Get it online: The Internet has made it cheaper to probe your customers' minds. For $15 a month, Constant Contact helps users create surveys, track responses and follow-up with clients. Zoomerang offers a similar service for $19 a month. is free, but surveys are limited to 20 questions and 50 respondents.

Reach out: You don't have to circulate a survey to get to know your customers. You could create an e-mail mailing list to help you solicit opinions or hold an event at your office where you could socialize with clients.

For example, Michael Solomon, a consumer-behavior professor at St. Joseph's University in Philadelphia who wrote The Truth About What Customers Want (FT Press), says bookstores should hold regular discussion groups or events to engage shoppers. "You're creating a community that shares a common interest," he says. "You have a loyal group who will evangelize for you."

Go public: People use social-networking sites like Facebook, MySpace and Twitter to discuss their experiences with companies they patronize. If a customer encounters bad service, they will likely make it known on their profile pages. Monitor those sites and set up a profile page to gather customer feedback. If you have time, start a blog on your website and encourage readers to give feedback.

Keep it in perspective: Don't rethink your product or service over every suggestion. won't add a new feature unless 20% of its users ask for it. They remove applications that aren't used by more than 5% of customers.

Follow through: If you don't try to draw conclusions and take action based on your research, then you're wasting hard-earned money. Ignoring customer complaints could alienate clients.
Lan Nguyen is a freelance writer based in New York City. She has written for the New York Daily News, The Wall Street Journal, Worth magazine and Star magazine.