iPod Etiquette

If I had one, I could live by these rules:

When to remove both earbuds:
During a job interview
Taking your driver’s test
When your sweetie calls

Remove one earbud:
Listening for your flight
Buying groceries
When a coworker calls

Leave ’em in:
Visiting the in-laws
At the laundromat
When your boss calls

(This was on Apple's new iPod page, but the link no longer works.)