As a User
So that I can let people know what I am doing  
I want to post a message (tweets) to twitter

As a User
So that I can see what others are saying  
I want to see all tweets in reverse chronological order

As a User
So that I can better appreciate the context of a tweet
I want to see the time at which it was made

As a User
So that only I can post messages on Twitter as me
I want to log in to Twitter

As a User
So that I can avoid others posting messages on Twitter as me
I want to log out of Twitter

As a User
So that I can post messages on Twitter as me
I want to sign up for Twitter

As a User
So that I show my love for a tweet
I want to like on a tweet

As a User
So that I can post messages on Twitter as me
I want to edit my tweet

As a User
So that I can post messages on Twitter as me
I want to delete my Tweet

As a User
So that I show my love for a tweet
I want to comment on a tweet

As a User
So that I show see all my tweets in my own page
I want to have a profile page

As a User
So that I show see what others are upto 
I want to be able to follow another user

As a User
So that I show stop seeing what others are upto
I want to be able to unfollow another user

As a User
So that I can stay constantly tapped in to the shouty box of Twitter
I want to receive an email if I am tagged in a Tweet