Follow the direct link below and click on 'delete account'. Enter your password and click 'Delete' to delete your Yfrog account.
If you just want to delete photo's, check this neat tutorial: http://techieminx.com/delete-photos-on-new-design-yfrog-part-two.html
Enlace de la terminación directa: http://yfrog.com/user/settings
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 you can always contact Yfrog and ask personally. By the way, deletion requests don't necessarily mean your data will actually be deleted (e.g. due to legal obligations).
If you signed up for Yfrog using a third-party login such as Facebook or Twitter, you probably want to revoke all access from Yfrog. Click the icon below to find out how.