instant messaging

1. N-UNCOUNT Instant messaging is the sending of written messages from one computer to another. The message appears immediately on the screen of the computer you send it to, provided the computer is using the service. The abbreviation is also used. 即时通讯[oft N n]

...users of the instant-messaging services of Yahoo, Microsoft and other rivals. …使用雅虎、微软和其他竞争公司即时通讯服务的用户们。