On-line ordering featuring general merchandise and general consumer goods;On-line ordering featuring downloadable digital goods; Exchange services, namely, bartering general merchandise and general consumer goods; Exchange services, namely, sale, exchange or bartering general merchandise, general consumer goods, downloadable consumer goods, services of others, and learning courses; Providing an on-line commercial information directory; Providing an on-line commercial information directory; Providing a searchable on-line advertising guide featuring the goods and services of other on-line vendors; Providing a searchable on-line catalog featuring general merchandise, general consumer goods, services, and downloadable digital goods; Database management services; Advertising services; Online advertising on a computer network; Advertising services, namely, promoting the goods and services of others; Electronic auction services via the internet; On-line auction services; Providing a website featuring evaluative feedback and ratings of consumer services of others in the field of rating sellers' general business practices, goods and services, the value and prices of sellers' goods and services, consumer value perception of sellers' goods and services, quality of sellers' goods and services, buyers' and sellers' performance, delivery,and overall experience in connection therewith