Datingweb sites are the logical progression from online classifieds, providing a specialized location for people who want to date, get married, or otherwise socialize. Their most important asset is their userbase, which tends to have high turnover as needs are met. Some, such as match.com have been notorious for having staff go on dates with no intention of progressing a relationship further, but only to provide the feeling that the site was helping connect the user with potential partners.
I told him that dirt in it's your dirt. What's your dirt doin' in his ditch?