Abstract: An Instant Messaging (IM) method and server are provided. The method includes: receiving instance login information sent by an IM client, wherein the instance login information at least includes login information of a user of the IM client and instance information of a terminal located by the IM client (101); authenticating identity of the user of the IM client, according to the login information in the instance login information (102); when the authenticating is passed, allocating an instance number for the IM client, according to the instance information in the instance login information, wherein the instance number is configured to uniquely identify the IM client (103). The server includes a receiving module (801), an authenticating module (802) and an allocating module (803). By adopting the method and server provided, multipoint login of one login account may be effectively achieved, and multiple aspects requirements of a user may be satisfied.

Abstract: An Instant Messaging (IM) method and server are provided. The method includes: receiving instance login information sent by an IM client, wherein the instance login information at least includes login information of a user of the IM client and instance information of a terminal located by the IM client (101); authenticating identity of the user of the IM client, according to the login information in the instance login information (102); when the authenticating is passed, allocating an instance number for the IM client, according to the instance information in the instance login information, wherein the instance number is configured to uniquely identify the IM client (103). The server includes a receiving module (801), an authenticating module (802) and an allocating module (803). By adopting the method and server provided, multipoint login of one login account may be effectively achieved, and multiple aspects requirements of a user may be satisfied.

Abstract: A system for pushing a service utilizing Instant Messaging includes: a service pushing subsystem, adapted to send a service stored in the service pushing subsystem to a client subsystem through instant messages; the client subsystem, adapted to receive the service sent by the service pushing subsystem and display the service; wherein the service pushing subsystem is in a buddy list stored in the client subsystem. A method for pushing a service utilizing Instant Messaging includes: sending, by a service pushing subsystem, a service stored in the service pushing subsystem to a client subsystem through instant messages, wherein the service pushing subsystem is in a buddy list stored in the client subsystem; and receiving, by the client subsystem, the service sent by the service pushing subsystem and displaying the service. In accordance with the present invention, it is possible to implement the real-time interaction between the user and the service and improve the service efficiency and effect.