Other sites target highly specific demographics based on features like shared interests, location, religion, sexual orientation or relationship type.Online dating services also differ widely in their revenue streams.Most services also encourage members to add photos or videos to their profile.

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That is, online dating sites use the conceptual framework of a "marketplace metaphor" to help people find potential matches, with layouts and functionalities that make it easy to quickly browse and select profiles in a manner similar to how one might browse an online store.

Under this metaphor, members of a given service can both "shop" for potential relationship partners and "sell" themselves in hopes of finding a successful match.

A 2005 study of data collected by the Pew Internet & American Life Project found that individuals are more likely to use an online dating service if they use the Internet for a greater number of tasks, and less likely to use such a service if they are trusting of others.

It is possible that the mode of online dating resonates with some participants' conceptual orientation towards the process of finding a romantic partner.

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.

Still others rely solely on paid membership subscriptions.

Opinions and usage of online dating services also differ widely.

However, Sam Yagan describes dating sites as ideal advertising platforms because of the wealth of demographic data made available by users.