TUTORIAL TO PROTECT YOUR TWEETS ON TWITTER
Original Source: http://techmell.com/how-to/protect-tweets
Step 1) Browse to http://www.twitter.com
Step 2) Log on using your account information
Step 3) Navigate to the upper right end of the black bar on top of the page. Where it says “User Name” there will be a downward arrow, click on this and go to settings:
Step 4) The settings page should now be opened in front of you. Scroll the page down to the option labeled “Tweet Privacy”. Select the box marked “Protect my tweets”. This will restrict public viewing of your tweets so they are only visible to people following you.
Step 5) Save the new settings by pressing the “Save” button at the very bottom of the Settings page.
Step 6) Now your tweets are private and successfully protected.
How To Protect My Tweets on Twitter