A great diversity of online dating services currently exists.

Some have a broad membership base of diverse users looking for many different types of relationships.

Opinions and usage of online dating services also differ widely.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.Niche sites cater to people with special interests, such as sports fans, racing and automotive fans, medical or other professionals, people with political or religious preferences (e.g., Hindu, Jewish, Christian, Muslim, etc.), people with medical conditions (e.g., HIV , obese), or those living in rural farm communities.

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.The "Xennials" are supposedly a group born between the late 1970s and early 1980s, who were born analogue and became digital adults.