Yes i know, but i mean when you install this plugin (when it would be created) on somebody else's account without him/her knowing it. You could set it up to forward all communication to your account while your victom doesn't know unless he/she goes to Plus! preferences > Plugins. On the other hand, installing a keylogger, virus or whatever is just as easy that way. I guess i just had a paranoid privacy attack
.
I do like the suggestion BTW, just can't figure out a sitiation in which it would be usefull yet.