Don't sit down to talk. The acoustics are better the higher you are, and remember that most people are a bit deaf so speak up louder!

Try to talk with _at least_ three people between you and your listener, so that they don't feel left out.

Never warn people of your approach by knocking on their desk or cupboard. People love surprises, especially if they're busy.

The best time to disturb someone is when they look thoughtful or are concentrating. It's your _duty_ to give them a break now and again.

To make sure that _you_ get regular breaks, never use a "Do No Disturb" sign. When other people use them they're only joking.

If you have to design the office layout, remember to leave lots of wide-open spaces so that we can see and hear each other right across the floor.