Advertising and promotional services; Advertising and publicity services; Advertising services; Arranging and conducting of fairs and exhibitions for business and advertising purposes; Conducting virtual trade show exhibitions online in the field of automobiles, art and crafts; Marketing services, namely, promoting or advertising the goods and services of others; Marketing, promotional and advertising services provided by mobile telephone connections; Mediation of advertising; Online advertising and marketing services in the field of dentistry and dental equipment via wireless networks for display on mobile devices; Online advertising network matching services for connecting advertisers to websites; Online matching services for connecting social network users with retailers for the purpose of facilitating discounted purchases; Provision of an on-line marketplace for buyers and sellers of goods and services; Rental of billboards; Systemization of information into computer databases; Updating and maintaining business contact information via the Internet