No leliel, in viewer 1 you could bring up your friends list, there would be a column listing your friends, in one of those columns if you held your mouse over it, it would say something like "this friend can see you online" you would then click that spot and the icon would grey out, and when you held your mouse cursor over that same spot it would then say something like "this friend cannot see you when you are online". But that was viewer 1 as i said, viewer 2 has no such option it seem. Besides, think about it....Why would your friends list even say that in the first place when you held your mouse over a name? "You're friend can see you online"??? Think about it.