To change your email address, go to your Dashboard and click on the User Preferences link (or the Settings link under your username in the top right corner of the page). It will direct you to a page where you can type in your new email address.
Click the “Forgotten your password?” link on the login page and enter your username and email address. An email will be sent to you that will allow you to change your password.
To delete your account, click the “Delete Account” link on your dashboard.
It is not possible to change your username. If everyone could change their username, people would do it all the time and it would be impossible to keep track of any one person.
