Still a relatively young concept, the popularity of secret-sales sites is quickly gathering momentum. In a nutshell, secret-sales sites can be defined as websites that sell branded merchandise exclusively to site members via limited period, timed events. Usually, consumers can only sign up via invitation from a friend who is already a member. In contrast to traditional online shops that allow the passing web user to browse their wares, the offering on a secret-sales website is hidden from the general public. Read more at Catalog-biz.com.