On-line advertising and marketing services; On-line business directories featuring E-COMMERCE; On-line ordering services in the field of restaurant take-out and delivery; On-line price monitoring and adjusting for customers of travel related purchases; On-line promotion of computer networks and websites; On-line retail store services featuring downloadable pre-recorded music and video; On-line services, namely, ordering and inventory monitoring for E-COMMERCE; On-line tracking for others of s...