Other sites are more specific, based on the type of members, interests, location, or relationship desired.
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 amount of tasks and less likely to use such a service if they are trusting of others.
A German documentary analyzed the market and uncovered multiple problems of online dating sites.
Research about social networking reveals that the online dating services driven by subscriptions offer the least amount of social networking opportunities.
The dating services modeled on the free-at-the-point-of-use model scored much higher as many of them utilized the Circle of Friends social networking method and a wider number of online community genres.
Since 2003, several free dating sites, operating on ad based-revenue rather than monthly subscriptions, have appeared and become increasingly popular.
Several newer sites such as Ok are beginning to offer more full featured dating services for free, and are starting to compete with staples in the free dating site world such as
Most sites allow members to upload photos or videos of themselves and browse the photos and videos of others.