Computerized on-line ordering featuring general services, general merchandise and general consumer goods; exchange services, namely, bartering of general services, general merchandise and general consumer goods of others; providing an on-line commercial information directory; providing a searchable database in the field of business information available via a global computer network; providing a searchable on-line advertising guide featuring the goods and services of other on-line vendors; database management services; advertising services, namely providing advertising in the nature of on-line and electronic classified directories; electronic auction services via the internet; on-line auction services; providing a website featuring evaluative feedback and product ratings of consumer services of others in the field of rating sellers' goods and services, the value and prices of sellers' goods and services, buyers' and sellers' performance, delivery, and overall experience in connection therewith