A great diversity of online dating services currently exists (see Comparison of online dating services).
Some have a broad membership base of diverse users looking for many different types of relationships.
Such companies offer a wide variety of unmoderated matchmaking services, most of which are profile-based.
Online dating services allow users to become "members" by creating a profile and uploading personal information including (but not limited to) age, gender, sexual orientation, location, and appearance.
Introduction sites differ from the traditional online dating model, and attracted a large number of users and significant investor interest.
Opinions and usage of online dating services also differ widely.Other sites target highly specific demographics based on features like shared interests, location, religion, sexual orientation or relationship type.Online dating services also differ widely in their revenue streams.Most services offer digital messaging, while others provide additional services such as webcasts, online chat, telephone chat (VOIP), and message boards.Members can constrain their interactions to the online space, or they can arrange a date to meet in person.