Online trading and retail services, namely, operating an online marketplace for sellers and buyers of children's books; online trading services in which sellers post children's books to be offered for sale, and purchase is done via the Internet in order to facilitate the sale of children's books by others via a digital network; commercial evaluation and rating of consumer goods for others prior to purchase, namely, providing evaluative feedback and rating of sellers' good, the value and prices of sellers' goods, buyers' and sellers' performance, delivery, and overall experience in connection therewith; providing a searchable online database featuring children's books being offered for sale for buyers and sellers