On my client (iChat) I can’t respond to you when you do this. So, I’m not being evil or rude and I don’t hate you. I am just not allowed by our mutual configurations to converse.
I suggest having a list of people you don’t mind seeing you online, rather than being invisible, if you want to communicate better with others.
And now back to our feature presentation: “If At All Possible Involve a Cow”, starring John “Mad Dog” Ashcroft and Kiki Dee.