Online dating sites use market metaphors to match people.

Match metaphors are conceptual frameworks that allow individuals to make sense of new concepts by drawing upon familiar experiences and frame-works.

Read on for our expert advice on navigating online dating like a pro.

and easy online dating-88

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.

Some sites such as Ok Cupid.com, and are free and offer additional paid services in a freemium revenue model.

Some sites are broad-based, with members coming from a variety of backgrounds looking for different types of relationships.

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.

Sites may offer additional services, such as webcasts, online chat, telephone chat (VOIP), and message boards.

The highest scoring dating service was Facebook, which uses the personal homepage genre, the message board genre, the weblog and directory genre, as well as utilizing the Circle of Friends.

The second highest scoring, Second Life utilizes virtual worlds, message boards, chat groups and profile pages to allow people to contact in a three-dimensional environment.

Due to the level of competition between free dating sites, as well as the overall drop in traffic to and revenue for dating sites generally, This represents a break from traditional externally sourced ads and is just one of the ways that the revenue models of free dating sites are evolving.