Advertising and commercial information services, via the internet; Advertising via electronic media and specifically the internet; Compilation of advertisements for use as web pages on the Internet; Dissemination of advertising for others via an on-line communications network on the internet; Internet advertising services; On-line business directories featuring professional within dental industry; Providing a searchable online advertising guide featuring the goods and services of other on-line vendors on the internet; Providing an on-line commercial information directory on the internet; Providing an on-line directory information service featuring information regarding professionals within dental industry; Providing consumer product information via the Internet; Providing on-line directory information services also featuring hyperlinks to other web sites