Many moderators choose to share their entire desktop when using application sharing. This means that the participants viewing your desktop can see everything that you as a moderator can see, including private messages in the Chat window. You may not want other participants to view these private messages, so here is a little trick.
Using the Chat Filter (at the top of the Chat window), simply switch the default setting of “All” in the From Menu to “Public” and only the public messages will appear in the discussion region. Then when you stop sharing your desktop, simply revert the filter back to “All” and you will be able to view all the private text messages that were sent. Read more about this feature at http://www.elluminate.com/support/docs/8.0/moderator.jsp in the section on Chat.
Information Source: Elluminate Techline