Doctors, attorneys and dentists have largely missed the e-commerce boom. So have other service-based businesses like salons and interior design.

Sure, your Web site can provide information about your business. But it can't make a sale. That's because your clients can't book appointments online.

Your clients still must call or e-mail to schedule an appointment. And you probably can't handle client requests 24/7. This means wasted time calling back clients for scheduling.

Well, new sites are offering solutions to the problem. They make it possible for clients to schedule appointments online.

Stop the phone tag

You can eliminate the back-and-forth and reduce the time spent on scheduling. And your clients will appreciate the simplicity, too.

Appointments can be scheduled day or night. This is particularly beneficial for luxury services. A customer can book a dinner reservation or spa day on an impulse.

For other businesses, online scheduling is better for repeat clients or referrals. Sure, it can draw in new clients. But potential clients will have questions for doctors, dentists and other professionals. You may prefer to speak with new clients prior to an appointment.