If you want to enhance your RoomSync roommate-finding experience, you should update your privacy settings on Facebook so other users (who aren't in your current friend networks) can message you and see what you're all about.
How to update your privacy settings to allow messages from other users:
1. Click on the arrow next to the home button on the upper-right hand of your screen.
2. Click on Privacy Settings
3. Scroll down to How You Connect
4. Click on Edit Settings
5. Update Who can send you Facebook messages to Everyone.