Various aspects relate to using structured messages within systems that implement instant messaging function in a distributed computing environment. In particular, structured information may be encoded and embedded in unstructured instant messages and communicated among one or more computer systems, networks, applications or other entities. In one aspect, instant messaging may be leveraged as middleware for application integration. Other aspects relate to using structured message information to perform functions in a distributed instant messaging system. For example, structured message information may be used to control the display of instant message information to a user, or may be used to control how the instant message information is distributed, processed, or otherwise handled by a receiving system, application or process. Other aspects relate to an interface for displaying information relating to a number of instant messaging conversations to a user. Further, aspects relate to using instant messaging in a trading environment.