Please, stop editing your messages in coversations both on wiki threads and skype chat room. People do this only in cases they see a typo in their message or they forgot to add some information, before it is asnwered or mentioned by other people, but you have been misusing this feature. It doesn't look good, when you rewrite/remove exactly the information that is already mensioned or quoted below you message. If you try to pretend you didn't say something what you DID say, it looks like cheating people. Also, it doesn't looks good, when you change meaning of your previous messages (like this one).