have you ever noticed, when you go to the Users Online Now page..and it says X Members Online now (not counting Hidden Members.)
What is a hidden member?
When you surf AO, in your member options you have the choice whether to be hidden or not. All that means is that you will always be seen as offline whether you are or not.
Outside of a dog, a book is man's best friend. Inside of a dog it's too dark to read.