Many require customers to fill out electronic forms to contact a representative, but rarely do they offer a phone number.

Since 1987, securities firms have required customers to arbitrate disputes rather than take them to court.

Certain companies have long required customers to resolve their disputes privately.

At the same time, insurers are encouraging and sometimes even requiring customers to fill their prescriptions on the Internet as a way to cut costs.

KwikMed.com features a questionnaire devised by a real physician, requiring customers to answer anywhere from 20 and 200 questions.

The bank will, however, require customers to use the corrected version of the Netscape program.

Vertical tying is the practice of requiring customers to purchase related products or services together, from the same company.

Still, regulators have required customers to pay on average $5 per month for 14 years, or more than $800 each.

They found that requiring customers to buy their products in person increased sales.

To the Editor: A market economy requires customers with money to buy its products.