When using MSN Messenger there is an option to appear offline even when we are online. All of our contacts will see us as offline and they do not know that we are online truly. However that option implies to appear offline to all contacts. It is a "all or nothing law" - we appear online to all or we appear offline to all contacts. I would like to choose which contacts I appear as online or offline - I need to appear online only for some selected contacts, and appear offline to others... It this possible ? Any application to hack MSN Messenger ? A plug-in / add-on ? An alternative messenger with such option ?