While some sites conduct background checks on members, many do not, resulting in some uncertainty around members' identities.
Most services also encourage members to add photos or videos to their profile.
Once a profile has been created, members can view the profiles of other members of the service, using the visible profile information to decide whether or not to initiate contact.
A great diversity of online dating services currently exists.
Some have a broad membership base of diverse users looking for many different types of relationships.
However, Sam Yagan describes dating sites as ideal advertising platforms because of the wealth of demographic data made available by users.