I first of all fail to see why I have to 'add participants" when they are people who I do not even know! This requires me to find users who have similar issues to mine. Then they insult me by saying "you may not start a conversation with the following participants." I did not want to "add participants" in the first place! I wanted users to find my thread on their own and answer back on their own. I have never seen such an arrogant and abusive website where they make demands of their users and insult them as the first thing.