Did you know the world population is relatively less than social media users? This is because a person is creating several online accounts with several email ids for different purposes in the same portal, and in most cases, email IDs and accounts are abandoned because maintaining multiple online accounts with different email IDs is not easy. In most of the online account portal, a member is not allowed to sign up again to create another account with the same email address. Even "twitter" does the same thing - Does it really? Yes , of course, if you try to sign up twitter with the same email address that you provided for your existing account an error message pop up's saying " This email id is already registered ". But if you want to create multiple Twitter accounts for several purposes tagged to one email ID that reduces the unnecessary multiple email ID creation for multiple twitter accounts, For example: if you are a parent and want to control ...