Check out this video regarding Facebook etiquette. One of the reasons I dislike Facebook so much is because 90% of the users of that site break every one of these rules.
Also, Time magazine added some more rules for Facebook:
Click Here: How Not To Be Hated On Facebook
I have been asked if I miss Facebook since canceling my account and the short answer is: absolutely not.
In case you missed my first Facebook diatribe, here you go:
Click here: Facebook Is Rotten