This option allows you to set up TypeKey (or a compatible service) on your blog to enable authenticated commenting. This is highly recommended as an extremely effective and easy anti-spam technique.

The "Setup Authentication" button will launch a wizard in a pop-up window that will easily allow you to complete the setup. You may also enter your TypeKey token (found on your TypeKey profile) manually into the space provided.

If you are not using TypeKey, but instead a TypeKey-compatible service, you must enter the token manually.