How can I make my tweets private?

Question

I want my tweets on Twitter to remain private and not be visible to anyone except those I designate as being able to view.

How do I accomplish this?

Answer 1

You need to check "Protect my tweets" on http://twitter.com/settings/account

Only let people whom I approve follow my tweets. If this is checked, your future tweets will not be available publicly. Tweets posted previously may still be publicly visible in some places.

Answer 2

If your intent is to share your tweets only with coworkers, you may want to look at http://yammer.com.