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.
Users of an online dating service would usually provide personal information, to enable them to search the service provider's database for other individuals.
Members use criteria other members set, such as age range, gender and location.
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.