An oldie but a goody: Don't tweet anything you wouldn't want your parents, boss, law enforcement, your kids' friends or your significant other to read.
Remember that you're not tweeting into a vacuum. Every tweet becomes part of the permanent record of the Internet. The words you put out there could carry weight over time and could affect your future, whether you're trying to get a job or a date. Only tweet it if you're OK with someone reading it 20 years down the road.
If you are tempted to tweeti something you think might be offensive, stop and think it over. Anticipate the reaction this tweet might get.
Don't use Twitter as a weapon. Avoid using tweets, which are public and permanent, as a forum to make your ex, a celebrity or a rival look bad. It almost always backfires.
Had a few drinks? Angry that you didn't get a raise? Tired from working back-to-back shifts? Simply put: Don't tweet when you're impaired.
A debate on Twitter is fine. Fighting and nastiness is not.
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