12. A machine readable storage device having stored thereon a computer program for integrating dynamically produced application input and output into instant messaging/chat content in an established instant messaging/chat session, the computer program comprising a routine set of instructions which when executed by a machine cause the machine to perform the steps of: receiving application input from a remote instant messaging/chat client as a posting to the established instant messaging/chat session between instant messaging/chat clients, the application input is an application command distinguishable from conversational text; forwarding said received application input to a designated external application; receiving application output from said designated external application via a second remote instant messaging/chat client as content in said established instant messaging/chat session; determining in said established instant messaging/chat session which instant messaging/chat clients participating in said established instant messaging/chat session process said application output in a native data format and which of said instant messaging/chat clients process said application output only as a session processible textual representation; converting said application output to said session processible textual representation for said instant messaging/chat clients determined to process said application output only as a session processible textual representation, while forwarding said application output in said native data format to instant messaging/chat clients determined to process said application output in a native data format; and, posting said converted application output as content in said established instant messaging/chat session for instant message/chat clients determined to process said application output only as a session processible textual representation.
12. A machine readable storage device having stored thereon a computer program for integrating dynamically produced application input and output into instant messaging/chat content in an established instant messaging/chat session, the computer program comprising a routine set of instructions which when executed by a machine cause the machine to perform the steps of: receiving application input from a remote instant messaging/chat client as a posting to the established instant messaging/chat session between instant messaging/chat clients, the application input is an application command distinguishable from conversational text; forwarding said received application input to a designated external application; receiving application output from said designated external application via a second remote instant messaging/chat client as content in said established instant messaging/chat session; determining in said established instant messaging/chat session which instant messaging/chat clients participating in said established instant messaging/chat session process said application output in a native data format and which of said instant messaging/chat clients process said application output only as a session processible textual representation; converting said application output to said session processible textual representation for said instant messaging/chat clients determined to process said application output only as a session processible textual representation, while forwarding said application output in said native data format to instant messaging/chat clients determined to process said application output in a native data format; and, posting said converted application output as content in said established instant messaging/chat session for instant message/chat clients determined to process said application output only as a session processible textual representation. 13. The machine readable storage device of claim 12 , further comprising a routine set of instructions for causing the machine to further perform the step of pre-processing said application input before forwarding said received application input to the designated external application.