Update to ICQ disease:

0th Stage - You forward all sorts of rubbish - 'you will be deleted if you do not forward this to everyone', 'forward this to donate $2 to some child dying of cancer' and 'forward to everyone to see a penguin jumping about'

1st Stage - You don't greet people when they come online anymore.

2nd stage - You stay invisible all the time

3rd stage - You ignore people when they message you.

4th stage - You stop using ICQ.