Detect Yahoo Invisible Users

Are you wondering whether your friends/contacts on Yahoo Messenger are really offline or just invisible? Wonder no more, I had found some web tools that check the online/offline status of anyone on Yahoo Messenger.

Detect Yahoo Messenger invisible users using any of the following:

http://invisible-scanner.com

http://www.2oost.com/

Now, don't hate me if your girlfriend flames on you when she finds you cloaked after telling her that you can't chat with her due to connectivity issues. :D