Do you keep getting weird messages on Facebook from strangers. You should now sigh with relief because you can control who sends you messages. Here's How:

Step 1: Sign into your Facebook account. Go to the top right hand corner,click the drop down arrow and select privacy settings.
 

 
 
Step 2: Select "Edit Settings" under the "How You Connect" heading.
 
 

 
Step 3: Next to "Who can send you Facebook messages?" click the drop down arrow and select Friends.Click Done.
 

 
 

You are now message free from strangers, only your friends can send you messages. Goodbye creepy messages :)