16 years old
On Twitter, you can invite your msn contacts to join Twitter.
You must be 13 years old to create a Twitter account.
Twitter says you need to be 13,although they don't ask the age.
Twitter states in their policy that you should be at least 13 years old to have an account.
Their privacy policy states that you should be at least 13 years old to use Twitter.
The join date on the Twitter profile cannot be removed.
No, anyone can join Twitter.
You have to be at least 13 years old to join Facebook.
You can if u want!!!!! you can be on twitter that age.. Twitter,Unlike other Social networking sites,doesn't ask your Age and Gender.
its free
The law suggests that you are HAVE to be 13 to be able to use websites like Facebook and Twitter , but Twitter doesn't ask your Date of Birth or Gender so I guess you can access it at any age.
no you have to be ten or older