Still others rely solely on paid membership subscriptions.
Opinions and usage of online dating services also differ widely.
For example, online dating sites may expose more female members in particular to stalking, fraud, and sexual violence by online predators.
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.
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.