Computer services; software as a service; software as a service featuring software for use in an e-commerce exchange system; software as a service featuring software for use in creating an online store; software as a service featuring software for use in an e-commerce exchange system which allows users to search for and create and edit lists of third party products he or she likes, wants or has, to be shared with, viewed by, and linked to others, and which also allows visitors to the user's lists to comment on and to purchase such products by providing hyperlinks to third party websites where the products are offered for sale; design and development of computer hardware and software