Computerized on-line retail store services in the field of oilfield, oil extraction, and gas extraction equipment and services; Marketing the goods and services of others by means of a website featuring oilfield, oil extraction, and gas extraction equipment and services; On-line retail store services featuring oilfield, oil extraction, and gas extraction equipment and services; Operating on-line marketplaces featuring oilfield, oil extraction, and gas extraction equipment and services; Operating on-line marketplaces for sellers and buyers of goods and/or services; Promoting and marketing the goods and services of others by means of a website featuring oilfield, oil extraction, and gas extraction equipment and services; Promoting the goods and services of others by providing a website featuring oilfield, oil extraction, and gas extraction equipment and services; Providing a searchable online advertising website and informational guide featuring the goods and services of other vendors via the internet in the field of oilfield, oil extraction, and gas extraction equipment and services; Providing a searchable website featuring the goods and services of other vendors; Providing a website featuring a list of items and services available for rent by others; Providing a website featuring an online marketplace for exchanging goods and services with other users; Providing a website for connecting sellers with buyers