A private contest is the ultimate in privacy on 110Designs. They are not indexed or crawled by search engines.
Designers can’t add designs they’ve submitted in a private contest into their 110Designs profiles, and should not share designs from private contests anywhere on the web unless they have altered it to a generic business name so that it will not be linked to the contest in any way.
Private contests are displayed with special lock icon in contests listing page.
You can make your contest Private as part of the process of launching a contest, or using the Edit Contest button on your contest page.