No.
On twitter anyone who is following you sees your updates on their page no matter what.
Miley Cyrus doesnt have a twitter and Selena doent follow anyone
No, you can follow who you want. You don't have to follow anyone.
it is recievd by anyone that is following your profile
You may send a tweet (or @reply) to anyone on Twitter; you certainly don't have to be following them! Following a Twitter user just means that all their tweets appear in the "timeline" on the home page of Twitter when you log in. (Along with your tweets and the tweets of anyone else you may be following.) To follow someone, go to their Twitter page and click the "follow" button. Anyway, to send a tweet to any Twitter user, just include an @ sign followed by the username of the user you want to send the tweet to. For example, if you want to send a tweet to the user with the username JohnSmith, include @JohnSmith in you tweet.
You cannot see who is following you on Twitter.
No, anyone can join Twitter.
You can block Aaron Carter on Twitter to stop him from following you.
Yes, anyone 14+ can have a Twitter account.
No twitter is for anyone who wants to tweet.
anyone
Yes, anyone can.