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Most free dating websites depend on advertising revenue, using tools such as Google Ad Sense and affiliate marketing.

Since advertising revenues are modest compared to membership fees, this model requires a large number of page views to achieve profitability.

An online dating service is a company that provides specific mechanisms (generally websites or applications) for online dating through the use of Internet-connected personal computers or mobile devices.Katharina Kreitz (TUM Mechanical Engineering 2007) has already found her dream job: together with the engineer Florian Wehner, she founded Vectoflow - a company producing extremely robust multi-hole probes.They were supported by the TUM consultations for start-ups.While some sites conduct background checks on members, many do not, resulting in some uncertainty around members' identities.For instance, some profiles may not represent real humans but rather "bait profiles" placed online by site owners to attract new paying members, or "spam profiles" created by advertisers to market services and products.