Hi, Maybe the following extension is also an instance related this topic. http://www.xmpp.org/extensions/inbox/bleg.html
Introduction A "bleg" is a question or request that a user broadcasts to a group of buddies or to the world, often by means of a weblog post (the word is a combination of "beg" and "blog"). People who have an answer to the question can then contact the user with helpful information. Naturally, it is possible to use instant messaging technologies to broadcast a bleg and receive replies. This document defines such a method, for use over XMPP. Qian
