Give Customers What They Want in Seven Steps

Mint.com, 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 Mint.com 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: ...