Udacity website was founded by Sebastian Thrun, David Stavens and Mike Sokolsky in June 2011 and currently it is one of the best online website for studying IT course that can be accessed worldwide. As per source currently there are more than 1.6 million users has been registered with the website.
How To Delete Udacity Account
Currently you cannot delete your account from udacity as per their terms and conditions but you can change your account information to make it unrecognizable. You can send mail to firstname.lastname@example.org and tell them to remove your billing information from their website.