How to Annoy People Using Instant Messaging

I came across this website, while looking for "time management tips". But this post is even better.

How to Annoy People Using Instant Messaging

1. Disregard any presence indicators your colleagues use such as busy or away.
2. Never check whether a person has time to chat
3. Don’t ever use correct capitalization or punctuation
4. Try out all the abbreviations you can think of

For complete list, see webworkerdaily