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.
LONDON (Reuters) - Being too tired for sex is less of a problem for married Britons than for U. or Australian couples, and Brits place more importance on agreeing on how to handle their in-laws, online dating company e Harmony has found. S.-based e Harmony, which boasts 118 marriages every day in the United States and launches in Britain this week, says married people in Britain are also more satisfied with how they share household chores and how much time they spend together.