I think "on facebook" is right, for it's a website.
No, the preposition is incorrect. It should be, "Have a look at my new page on facebook."
Depends on what you are saying;e.gOn facebook there is a....In facebook i have put.... :D
its nice to see you in the facebook
in the book we can note lots of matter so facebook is a correct website and it is used to chat in web cams also so thats y the facebook is the correct name for it
De Facebook
13
Bonjour Facebook.
Use correct grammar.
Most likely because you are.
Está em Facebook
Willkommen bei Facebook.
Agregame en Facebook