These preferences allow you to opt in or out of the non-existing domain landing service.
At any point in time you can opt in or out of these services using this page.

This preference allows you to opt in or out of the Typo Correction Service. This service will automatically fix many common typos in web addresses (for example: ww to www and .cmo to .com). If you enter a non-existent web address, and this service is able to typo-correct your domain to a valid web address, you will be taken there automatically.

This preference allows you to specify whether or not you would like to filter the returned results based on adult content. By default, contents will not be filtered, but you may enable adult content by selecting this option.