Increasingly, consumers are choosing computerized messaging services provided by phone companies.

There are also programs which let people use different messaging services from one program, such as Pidgin.

The use of search engines and instant messaging services is also booming.

Executives of the companies had pledged to open their instant messaging services within a year.

Millions of personal computers users use various on-line messaging services.

Furthermore the website provides a private messaging service for its members and an internet radio.

You wouldn't be able to fire up an instant messaging service to check up on friends.

Only then could Facebook's messaging service, really begin to have the major impact it hopes to.

They argued that it remains the dominant instant messaging service.

It is generally associated with real-time or instant messaging services.