steps to find out who is invisible in g-talk

Follow the steps to found who is invisble …

1. Open the Chat Window of the User, you want to check the status for.
2. Click on option and click on "Go Off the Record".
3. Send a Message to User.
4. If you get "User is offline and can't receive messages" writen in red color, that means a User is actually offline.
5.  But if you get nothing in response, know that a User is online and in Invisible mode