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Such sites earn revenue from a mix of advertising and sale of additional options.This model also allows users to switch between free and paying status at will, with sites accepting a variety of online currencies and payment options.The 2016 Pew Research Center's survey reveals that the usage of online dating sites by American adults increased from 9% in 2013, to 12% in 2015.Further, during this period, the usage among 18- to 24-year-olds tripled, while that among 55- to 65-year-olds doubled.However, Sam Yagan describes dating sites as ideal advertising platforms because of the wealth of demographic data made available by users.There are mixed opinions regarding the safety of online dating.
Online dating services also differ widely in their revenue streams.
Some sites are completely free and depend on advertising for revenue.
Others utilize the freemium revenue model, offering free registration and use, with optional, paid, premium services.
Most services also encourage members to add photos or videos to their profile.
Once a profile has been created, members can view the profiles of other members of the service, using the visible profile information to decide whether or not to initiate contact.