In Eastern Europe, popular sites offer full access to messaging and profiles, but provide additional services for pay, such as prioritizing profile position, removing advertisements, and giving paying users access to a more advanced search engine.

Such sites earn revenue from a mix of advertising and sale of additional options.

Members can constrain their interactions to the online space, or they can arrange a date to meet in person.

A great diversity of online dating services currently exists.

In 2008, a variation of the online dating model emerged in the form of introduction sites, where members have to search and contact other members, who introduce them to other members whom they deem compatible.

This means caring about your privacy, encrypting identifiable data, and never employing fake profiles or software bots.” New studies have found that one in five Americans have participated in an open sexual relationship.Others utilize the freemium revenue model, offering free registration and use, with optional, paid, premium services.Still others rely solely on paid membership subscriptions.Online dating services also differ widely in their revenue streams.Some sites are completely free and depend on advertising for revenue.