AccountKiller
Write a mail to ryan.fujitani@flixster-inc.com asking for deletion. Include the email address and username you used for the registration.
Otherwise, try the deletion link provided and look for the other options.
Direct removal link: http://flixster.assistly.com/customer/portal/articles/169347-how-do-i-cancel-my-account-
Publicly visible text/images often aren't properly deleted even when you succeed in deleting an account. Try editing or deleting them manually before deleting the account itself. If you're unsure what happens to your tracks: this can be found mostly in the Terms of Service/Privacy Policy; otherwise you can always contact Rotten Tomatoes and ask personally. By the way, deletion requests don't necessarily mean your data will actually be deleted (e.g. due to legal obligations).
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