Providing goods and services that can be bought online opens up your website to the worldwide market and, if you want to keep up with competitors, you have no choice but to accept credit cards for online payments.
Nearly everyone has a credit card these days and it is the preferred method of payment to consumers everywhere.
People with credit cards are known to be more likely to impulse shop and spend more money as the payment process is so simple, this in turn will so increase your online profits.
