Twitter requires a little restraint: first because of the 140-character limit and second because, in the words of a top tweeter, you’ll want to “think before you click.”
When signing up for Facebook, after you’ve nailed down your basics (photo, where you’re from, where you live now, where you work, and anything else you don’t mind the world knowing), decide on your default privacy setting. The easiest and safest way to go is with “friends only.”
