There are eight countries:
1. Syria (Twitter is allowed)
2. Iran (Twitter is allowed)
3. PRC (Twitter is allowed)
4. Vietnam (Twitter is allowed)
5. North Korea
6. Pakistan (Twitter is allowed)
7. Colombia (They hate Mark Zuckinberg)
8. Mozambique (They hate Mark Zuckinberg)
23!
China
Actually, the use of Facebook can be banned at home, in school, and in certain countries.
I only know that Facebook is blocked in China
China Syria Iran
by facebook twitter and email
There are many people that do not have a Facebook account.
There is only one for the United States atleast www.facebook.com, for other countries facebook's simply substitute the .com for the countries specific internet address example: www.facebook.ca (canada)
How many Facebook what? that makes no sense.
Facebook is a social website application.
Facebook has only the responsibility to comply with the laws of all the countries where it is used. That is - 1st amendment is valid only in the United States for it.
there are over 2billion people on facebook