How to remove your TED account
In the Q&A section, you will find that you need to use the contact form (see link) and request account removal. Not 100% neat, but good enough.
Direct removal link: https://support.ted.com/customer/portal/emails/new
Helpful Trick: Removing online data
Publicly visible text/images often aren’t properly removed even when you succeed in removing an account. Try editing or removing them manually before removing 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 TED and ask personally. By the way, removal requests don’t necessarily mean your data will actually be removed (e.g. due to legal obligations).
Helpful Trick: Remove third-party logins
If you signed up for TED using a third-party login such as Facebook or Twitter, you probably want to revoke all access from TED. Click here to find out how.