Your valid Facebook profile/page/group URL same as:
- https://www.facebook.com/saldon.huynh
- https://www.facebook.com/profile.php?id=100007583460225
- https://www.facebook.com/businessinsider
- https://www.facebook.com/groups/fbdevelopers
Some invalid Facebook profile/page/group URL:
- Bill Gate
- [email protected]
- Not start with Facebook domain: https://facebook.com, https://www.facebook.