Services that initiate a call immediately do not consider the fact the some users may only have one phone line and need to disconnect from the Internet. This is a very important, yet sometimes difficult to evaluate, characteristic. The best way to establish the reliability of the service is to try it. Most service providers offer a demo on their own Web site. It's also a good idea to request a customer list to see the service in action on other Web sites.
Some service providers offer much more than just callback services.
Other service providers offer sophisticated application sharing. The value of Web-based callback services is in making it more convenient to initiate contact with a customer or prospect. Rather than the customer finding and dialing the company's phone number, the customer simply enters his own phone number using the computer keyboard at the point that he has a question. Additionally, the customer is not charged for the call. Working with PhoneMe PhoneMe is an excellent example of just how straightforward callback services are to implement.